Polycyclic nitrogen-containing compounds

ABSTRACT

New and valuable polycyclic compounds which contain nitrogen-containing rings and have a strong action on plants, agents for influencing plant growth containing these compounds, and a method of influencing plant growth with these compounds.

This is a division of application Ser. No. 781,767, filed Mar. 28, 1977, now U.S. Pat. No. 4,189,434.

The present invention relates to new and valuable polycyclic compounds, processes for their manufacture, crop protection agents containing these compounds, and their use as crop protection agents.

We have found that compounds of the formula ##STR1## where A denotes the radical --N═N--, B denotes the radicals --SO₂ --, ##STR2## C denotes the radicals --N═N-- or ##STR3## n denotes one of the integers 0 and 1, m denotes one of the integers 0 and 1, and R¹ denotes hydrogen, alkyl of 1 to 30 carbon atoms, alkenyl of 1 to 30 carbon atoms, alkynyl of 1 to 30 carbon atoms (preferably alkyl of 1 to 18 carbon atoms)-all of which may be linear or branched, cyclic or acyclic-, phenyl, naphthyl, or a more highly condensed aromatic radical, a heterocyclic radical with one or more hetero atoms (O, N, S), or aralkyl, it being possible for the aromatic radical to be substituted by a heterocycle, the abovementioned radicals, apart from hydrogen, being unsubstituted or mono- or polysubstituted by halogen (F, Cl, Br, I) or pseudo-halogen (CN, SCN), --OH, --SH, --NO₂, ═N--OH, --N--OAlk(Ar), ═S, ═NH, ═NAlk(Ar), ##STR4## --COOH or --SO₃ H or salts thereof, ##STR5## primary, secondary or tertiary alkyl, haloalkyl, haloalkoxy, haloalkylmercapto, or the radical ##STR6## Alk denoting alkyl and Ar denoting an aromatic radical, and R¹ may additionally denote, when m is O, (Alk, Ar)₃ Si--, (Alk, Ar)₃ SN-- and, when m is 1, --OAlk(Ar), --SAlk(Ar), the radical ##STR7## or --N(Alk,Ar)₂, and R² and R³ are identical or different and each denotes (B)_(m) --R⁴, R⁴ having the same meanings as R¹, and salts of these compounds, have a strong biological action on plants.

It is known to prepare compounds III-V, where R═CH₃ -- and C₂ H₅ --, by the following route: reaction of quadricyclane with azodicarboxylic acid esters (II) to give III, which is converted to IV by saponification and decarboxylation and oxidized, without isolation of IV, by CuCl₂ to the Cu^(I) complex of the azo compound V (JACS, 91, 5668, 1969). ##STR8##

Compound VI is obtained by partial saponification and decarboxylation of III.

The active ingredients according to the invention may be prepared as follows:

1. Preparation of the compounds described in Examples 1 and 2 and the tables relating thereto. Reaction of compounds III-VI with alkyl, aryl, aralkyl, sulfonyl, silyl, stannyl or heterocyclic azides or diazides synthesized by known methods (Houben-Weyl, 10/3, 777).

The reaction takes place in an indifferent solvent, e.g., petroleum ether, benzene, xylene, methylene chloride, chloroform, chlorobenzene, ether, tetrahydrofuran, dioxane, dimethylformamide and mixture of solvents, such as dioxane/water, the solvent depending on the solubility of the azide employed, at from -20° to +180° C., preferably +20° to 120° C. The reaction products precipitate out from the reaction solution either on cooling or, if polar solvents are used, upon addition of nonpolar solvents, or may be obtained by concentrating the solution.

During the reaction, Δ² -1,2,3-triazoline derivatives are formed, some of which, e.g., sulfonyl azides or azides in which the azide group is in conjugation with strongly electronegative substituents, already convert under the reaction conditions to exo- and/or endo-aziridine derivatives by elimination of nitrogen.

The addition of silyl azides to the C═C double bond gives N-silyl-Δ² -1,2,3-triazoline derivatives from which the corresponding N-H-Δ² -1,2,3-triazoline derivatives are formed upon treatment with ethanol/ligroin.

2. Preparation of the compounds described in Examples 3 and 4 and the tables relating thereto. Elimination of nitrogen from the Δ² -1,2,3-triazoline compounds to give the corresponding aziridine derivatives.

The elimination takes place in the abovementioned solvents either upon heating at from 90° to 140° C. or, after addition of acid catalysts, at from 20° to 80° C. Examples of suitable catalysts are acids (e.g., sulfuric acid, acetic acid, trifluoroacetic acid) and insoluble carrier substances containing acidic groups (e.g., ion exchangers).

3. Preparation of the compounds described in Example 5 and the table relating thereto. Reaction of N--H-- ² -1,2,3-triazoline or N-H-aziridine derivatives with carboxylic or thiocarboxylic acid halides, carboxylic acid anhydrides, chlorocarbonates, thiochlorocarbonates, phosgene, sulfonyl halides, sulfenyl halides, alkyl halides, alkenyl halides, alkynyl halides, aralkyl halides, aldehydes, ketones, isocyanates, mustard oils, and carbamoyl and thiocarbamoyl halides, the corresponding N-substituted triazoline and aziridine derivatives being formed either by elimination of hydrogen halide or by addition of the N--H group to the C═O or C═N double bond.

The reactions are carried out in known manner in inert solvents and usually in the presence of bases, e.g., tertiary amines, alkali metal carbonates or bicarbonates, sodium methylate, alkali metal hydroxides, etc., at from 20° to 100° C.

4. The reaction of compounds IV and VI with the substances listed under 3) gives the corresponding N-substituted and N,N'-disubstituted derivatives (Example 6), which are then reacted as described above under (1) and (2) (Example 2, 4).

5. The reaction of quadricyclane with alkyl, aryl or aralkyl azodicarboxylic acid diesters gives the corresponding N,N'-disubstituted derivatives (Example 6), which are then reacted as described above under (1) and (2) (Example 2, 4).

Generally, the compounds may be prepared by any of the processes given under (1), (2) and (3) above. However, the process for which the individual examples and tables are given is usually the most advantageous of the various methods possible.

The structure of the active ingredients was confirmed by nmr, infrared and mass spectroscopy or ultimate analysis.

The melting points given are uncorrected.

EXAMPLE 1 ##STR9##

72 parts (by weight) of compound V and 92 parts of p-chlorophenylazide are heated in 240 parts of benzene for 5 hours at 80° C. After the mixture has cooled to room temperature, the Δ² -1,2,3-triazoline derivative which has formed is suction filtered and washed with 50 parts of petroleum ether; yield: 148 parts (90% of theory); m.p.: 192°-193° C. (decomposes). ##STR10##

12 parts of V and 25 parts of 2-hydroxy-3-azido-5-chlorobenzenesulfonic acid are heated in 500 parts of dioxane/water (4:1) for 8 hours at 80° C. After the solvent has been distilled off in vacuo at 25 mbars, the residue is washed (digested) with 500 parts of benzene; yield: 32 parts (93% of theory); m.p.: 135° C. (decomposes). ##STR11##

3 parts of V and 8.1 parts of perfluorobutylsulfonylazide are stirred in 15 parts of benzene for 20 hours at room temperature. After the benzene has been distilled off at 50 mbars, the residue is digested with 50 parts of petroleum ether; yield: 9 parts (86% of theory); m.p.: 115° C. (decomposes).

The following compounds were prepared analogously:

    ______________________________________                                          ##STR12##                                                                                                    m.p.                                            R.sup.1            n     m     [°C.]                                    ______________________________________                                         H                  1     0     136  (decomposes)                               CH.sub.3           0     1     135  (decomposes)                               C.sub.3 H.sub.7    1     0     56   (decomposes)                               C.sub.8 H.sub.17   0     1     96   (decomposes)                               C.sub.12 H.sub.25  1     0     63   (decomposes)                                ##STR13##         1     0     100                                             CH.sub.2COOCH.sub.3                                                                               1     0     76                                              CH.sub.2CN         1     0     94   (decomposes)                                ##STR14##         1     0     76                                              CH.sub.2CH.sub.2N(C.sub.3 H.sub.7).sub.2                                                          1     0     54                                              (CH.sub.2).sub.3N(C.sub.2 H.sub.5).sub.2                                                          1     0     16                                               ##STR15##         1     0     62                                              CH.sub.2C.sub.6 H.sub.5                                                                           1     0     100                                              ##STR16##         1     0     88   (decomposes)                                ##STR17##         1     0     164  (decomposes)                                ##STR18##         1     0     170  (decomposes)                                ##STR19##         1     0     159  (decomposes)                                ##STR20##         1     0     191  (decomposes)                                ##STR21##         1     0     124  (decomposes)                                ##STR22##         1     0     144  (decomposes)                               C.sub.6 H.sub.5    1     0     149  (decomposes)                               C.sub.6 H.sub.5    0     1     119  (decomposes)                                ##STR23##         1     0     159  (decomposes)                                ##STR24##         0     1     135  (decomposes)                               p-BrC.sub.6 H.sub.4                                                                               1     0     185  (decomposes)                               p-ClC.sub.6 H.sub.4                                                                               0     1     125  (decomposes)                               p-NO.sub.2C.sub.6 H.sub.4                                                                         1     0     192  (decomposes)                               p-CH.sub.3 OC.sub.6 H.sub.4                                                                       1     0     153  (decomposes)                               p-CH.sub.3C.sub.6 H.sub.4                                                                         1     0     159  (decomposes)                               p-CH.sub.3C.sub.6 H.sub.4                                                                         0     1     126  (decomposes)                                ##STR25##         1     0     187  (decomposes)                               p-FC.sub.6 H.sub.4 1     0     156  (decomposes)                               p-C.sub.3 H.sub.7C.sub.6 H.sub.4                                                                  1     0     168  (decomposes)                               p-HOOCC.sub.6 H.sub.4                                                                             1     0     182  (decomposes)                                ##STR26##         1     0     216  (decomposes)                               p(C.sub.2 H.sub.5).sub.2 NC.sub.6 H.sub.4                                                         1     0     123  (decomposes)                               o-ClC.sub.6 H.sub.4                                                                               1     0     120  (decomposes)                               o-BrC.sub.6 H.sub.4                                                                               1     0     102  (decomposes)                               o-CH.sub. 3C.sub.6 H.sub.4                                                                        1     0     105  (decomposes)                               o-NO.sub.2C.sub.6 H.sub.4                                                                         1     0     168  (decomposes)                               o-NO.sub.2C.sub.6 H.sub.4                                                                         0     1     185  (decomposes)                               m-ClC.sub.6 H.sub.4                                                                               1     0     152  (decomposes)                               m-BrC.sub.6 H.sub.4                                                                               1     0     172  (decomposes)                               m-NO.sub.2C.sub.6 H.sub.4                                                                         1     0     193  (decomposes)                               m-CH.sub.3C.sub.6 H.sub.4                                                                         1     0     151  (decomposes)                               m-CF.sub.3C.sub.6 H.sub.4                                                                         1     0     145  (decomposes)                               m-C.sub.3 H.sub.7C.sub.6 H.sub.4                                                                  1     0     127  (decomposes)                                ##STR27##         1     0     182  (decomposes)                                ##STR28##         1     0     143  (decomposes)                                ##STR29##         1     0     113  (decomposes)                                ##STR30##         1     0     162  (decomposes)                                ##STR31##         1     0     173  (decomposes)                                ##STR32##         1     0     141  (decomposes)                                ##STR33##         1     0     127  (decomposes)                                ##STR34##         1     0     152  (decomposes)                                ##STR35##         1     0     78   (decomposes)                                ##STR36##         1     0     186  (decomposes)                                ##STR37##         1     0     175  (decomposes)                                ##STR38##         1     0     129  (decomposes)                                ##STR39##         1     0     159  (decomposes)                                ##STR40##         1     0     168  (decomposes)                                ##STR41##         1     0     166  (decomposes)                                ##STR42##         1     0     168  (decomposes)                                ##STR43##         1     0     164  (decomposes)                                ##STR44##         1     0     191  (decomposes)                                ##STR45##         1     0     164  (decomposes)                                ##STR46##         1     0     131  (decomposes)                                ##STR47##         1     0     189  (decomposes)                                ##STR48##         0     0     187  (decomposes)                                ##STR49##         0     0     255  (decomposes)                                ##STR50##         0     0     150  (decomposes)                                ##STR51##         1     0     181  (decomposes)                                ##STR52##         1     0     136  (decomposes)                                ##STR53##         1     0     196  (decomposes)                                ##STR54##         1     0     184  (decomposes)                                ##STR55##         0     0     250  (decomposes)                                ##STR56##         1     0     136  (decomposes)                                ##STR57##         1     0     132  (decomposes)                                ##STR58##         1     0     184  (decomposes)                                ##STR59##         0     0     155  (decomposes)                                ##STR60##         1     0     60   (decomposes)                                ##STR61##         1     0     188  (decomposes)                                ##STR62##         0     0     150  (decomposes)                                ##STR63##         1     0     199  (decomposes)                                ##STR64##         0     0     211  (decomposes)                                ##STR65##         1     0     220  (decomposes)                                ##STR66##         1     0     147  (decomposes)                                ##STR67##         1     0     175  (decomposes)                                ##STR68##         1     0     183  (decomposes)                                ##STR69##         1     0     183  (decomposes)                                ##STR70##         0     0     218  (decomposes)                                ##STR71##         0     0     92   (decomposes)                                ##STR72##         1     0     214  (decomposes)                                ##STR73##         1     0     69   (decomposes)                                ##STR74##         1     0     138  (decomposes)                                ##STR75##         1     0     112  (decomposes)                                ##STR76##         1     0     160                                             ______________________________________                                    

EXAMPLE 2 ##STR77##

24 parts of III and 20 parts of p-bromophenylazide are heated in 80 parts of benzene for 5 hours at 80° C. After the mixture has cooled to room temperature, the reaction product is suction filtered and washed with 50 parts of petroleum ether; yield: 38 parts (86% of theory); m.p.: 217°-218° C. (decomposes). ##STR78##

12 parts of III and 9 parts of phenylsulfonylazide are heated in 100 parts of chlorobenzene for 6 hours at 100° C. After the solvent has been distilled off at 25 mbars, the residue is digested with 100 parts of petroleum ether; yield: 18 parts (97% of theory); m.p.: 146° C. (ethanol/ligroin).

Compounds in which R² and/or R³ denote H may also be present in the form of their salts, for instance as salts with mineral acids, e.g., as hydrochlorides.

The following compounds were prepared analogously:

    __________________________________________________________________________      ##STR79##                                                                                                                     m.p.                           R.sup.1    R.sup.2        R.sup.3           n m °C.                     __________________________________________________________________________     H          COOCH.sub.3    COOCH.sub.3       1 0 83 (decomposes)                CH.sub.3   "              "                 0 1 100                                                                               (decomposes)                C.sub.3 H.sub.7                                                                           "              "                 1 0 86 (decomposes)                CH.sub.2COOCH.sub.3                                                                       "              "                 1 0 169                                                                               (decomposes)                CH.sub.2C.sub.6 H.sub.5                                                                   "              "                 1 0 118                                                                               (decomposes)                C.sub.6 H.sub.5                                                                           "              "                 1 0 157                                                                               (decomposes)                "          COOC.sub.2 H.sub.5                                                                            COOC.sub.2 H.sub.5                                                                               1 0 125                                                                               (decomposes)                 ##STR80## H              H                 1 0 135                                                                               (decomposes)                 ##STR81## "              "                 1 0 129                                                                               (decomposes)                 ##STR82## .sup.++ H      COOCH.sub.3       1 0 138                                                                               (decomposes)                 ##STR83## .sup.++ H      COOCH.sub.3       1 0 85 (decomposes)                 ##STR84## COOCH.sub.3    COOCH.sub.3       1 0 212                                                                               (decomposes)                "          .sup.++ COOCH.sub.3                                                                            ##STR85##        1 0 117                                                                               (decomposes)                            ##STR86##     COOCH.sub.3       1 0 229                                                                               (decomposes)                "                                                                                          ##STR87##     "                 1 0 217                                                                               (decomposes)                "                                                                                          ##STR88##     "                 1 0 113                                                                               (decomposes)                "                                                                                          ##STR89##     "                 1 0 84 (decomposes)                "          .sup.++SO.sub.2C.sub. 6 H.sub.5                                                               "                 1 0 139                                                                               (decomposes)                "                                                                                          ##STR90##                                                                                     ##STR91##        1 0 210                                                                               (decomposes)                "          COOCH.sub.2C.sub.6 H.sub.5                                                                    COOCH.sub.2C.sub.6 H.sub.5                                                                       1 0 70 (decomposes)                "          COOC.sub.6 H.sub.5                                                                            COOC.sub.6 H.sub.5                                                                               1 0 173                                                                               (decomposes)                "          COOC.sub.3 H.sub.7                                                                            COOC.sub.3 H.sub.7                                                                               1 0 150                                                                               (decomposes)                 ##STR92## .sup.++COOCH.sub.3                                                                             ##STR93##        1 0 oil                             ##STR94## COOCH.sub.3    COOCH.sub.3       1 0 221                                                                               (decomposes)                 ##STR95## "              "                 1 0 197                                                                               (decomposes)                 ##STR96## "              "                 1 0 221                                                                               (decomposes)                 ##STR97## "              "                 1 0 88 (decomposes)                 ##STR98## "              "                 1 0 180                                                                               (decomposes)                 ##STR99## "              "                 1 0 163                                                                               (decomposes)                 ##STR100##                                                                               "              "                 1 0 158                                                                               (decomposes)                 ##STR101##                                                                               "              "                 1 0 206                                                                               (decomposes)                 ##STR102##                                                                               "              "                 0 0 250                                                                               (decomposes)                 ##STR103##                                                                               "              "                 1 0 181                                                                               (decomposes)                 ##STR104##                                                                               .sup.++COOCH.sub.3                                                                             ##STR105##       1 0 156                                                                               (decomposes)                 ##STR106##                                                                               COOCH.sub.3    COOCH.sub.3       0 1 120                                                                               (decomposes)                 ##STR107##                                                                               H              H                 1 0 94                             __________________________________________________________________________      .sup.++ isomer mixture; R.sup.2 and R.sup.3 are interchangeable          

EXAMPLE 3 ##STR108##

10 parts of the abovementioned Δ² -1,2,3-triazoline derivative and 3 parts of trifluoroacetic acid are stirred for 5 hours in 50 parts of methylene chloride at room temperature. After the solvent has been distilled off, the residue is digested with 30 parts of ether; yield: 8 parts (88% of theory); m.p.: 195° C. (decomposes) (benzene/ligroin). ##STR109##

4 parts of the abovementioned Δ² -1,2,3-triazoline derivative is heated in 20 parts of dioxane for 6 hours at 100° C. After the solvent has been distilled off, the residue is digested with 10 parts of petroleum ether; yield: 3 parts (85% of theory); m.p.: 159° C. (decomposes) (ether/petroleum ether).

The following compounds were prepared analogously:

    ______________________________________                                          ##STR110##                                                                                                 m.p.                                              R.sup.1      m      B        [°C.]                                      ______________________________________                                         H            0      --       115                                               C.sub.6 H.sub.5                                                                             0      --       149                                                ##STR111##  1                                                                                      ##STR112##                                                                             80                                                 ##STR113##  0      --       140                                                ##STR114##  0      --       179   (decomposes)                                 ##STR115##  0      --       122   (decomposes)                                 ##STR116##  0      --       126   (decomposes)                                 ##STR117##  0      --       110   (decomposes)                                 ##STR118##  0      --       212   (decomposes)                                 ##STR119##  0      --       66                                                 ##STR120##  0      --       169   (decomposes)                                 ##STR121##  0      --       194   (decomposes)                                 ##STR122##  0      --       203   (decomposes)                                 ##STR123##  0      --       146                                               ______________________________________                                         EXAMPLE 4                                                                      ______________________________________                                          ##STR124##                                                                     ##STR125##                                                                    ______________________________________                                    

40 parts of the N-(p-bromophenyl)-Δ² -1,2,3-triazoline derivative is heated in 800 parts of xylene for 24 hours at 140° C. After the solvent has been distilled off, the residue is digested with 100 parts of petroleum ether; yield: 35 parts (92% of theory); m.p.: 170° C. (decomposes) (benzene/ligroin).

The following compounds are prepared analogously:

    ______________________________________                                          ##STR126##                                                                    R.sup.1   R.sup.2    R.sup.3    m.p. (°C.)                              ______________________________________                                         C.sub.6 H.sub.5CH.sub.2                                                                  COOCH.sub.3                                                                               COOCH.sub.3                                                                               140 (decomposes)                               C.sub.6 H.sub.5                                                                          "          "          187                                            "         COOC.sub.2 H.sub.5                                                                        COOC.sub.2 H.sub.5                                                                        109                                             ##STR127##                                                                              COOCH.sub.3                                                                               COOCH.sub.3                                                                               168                                            "         COOC.sub.6 H.sub.5                                                                        COOC.sub.6 H.sub.5                                                                        117                                             ##STR128##                                                                              COOCH.sub.3                                                                               "          174                                             ##STR129##                                                                              "          "          209                                             ##STR130##                                                                              "          "          153                                             ##STR131##                                                                              COOCH.sub.3                                                                               COOCH.sub.3                                                                               197                                             ##STR132##                                                                              "          "          175                                             ##STR133##                                                                              "          "          178                                             ##STR134##                                                                              "          "          190 (decomposes)                                ##STR135##                                                                              "          "          258 (decomposes)                               ______________________________________                                    

EXAMPLE 5 ##STR136##

10 parts of the N-H-Δ² -1,2,3-triazoline derivative and 2 parts of sodium methylate are stirred in 100 parts of tetrahydrofuran for 1 hour at room temperature. 8.6 parts of benzoyl chloride is then dripped in and the mixture stirred for a further two hours. After the precipitate has been removed by suction filtration, the solvent is distilled off at 50 mbars and the residue digested with 30 parts of ether; yield: 13 parts (80% of theory); m.p.: 117° C. (decomposes). ##STR137##

3 parts of the N-H-aziridine derivative and 3 parts of triethylamine are dissolved in 50 parts of tetrahydrofuran. At 0° to 5° C. and while stirring, 3.9 parts of benzene sulfochloride is dripped in. After removal of the precipitated triethylammonium chloride by suction filtration, the solvent is distilled off. The residue is washed with 50 parts of water and dried; yield: 5.4 parts (88% of theory); m.p.: 154° C. (decomposes).

The following compounds were prepared analogously:

    ______________________________________                                          ##STR138##                                                                    R.sup.1           n     m     B     m.p. [°C.]                          ______________________________________                                         OCH.sub.3         1     1                                                                                     ##STR139##                                                                          117 (decomposes)                           OC.sub.3 H.sub.7  1     1                                                                                     ##STR140##                                                                          118 (decomposes)                            ##STR141##       1     1                                                                                     ##STR142##                                                                          156 (decomposes)                            ##STR143##       1     1                                                                                     ##STR144##                                                                          169 (decomposes)                            ##STR145##       0     1                                                                                     ##STR146##                                                                          118 (decomposes)                           N(CH.sub.3).sub.2 1     1                                                                                     ##STR147##                                                                          108 (decomposes)                           CH.sub.3          1     1                                                                                     ##STR148##                                                                          79                                         HCCCH.sub.2       1     0     --    60                                          ##STR149##       1     0     --    66 (decomposes)                             ##STR150##       1     0     --    159 (decomposes)                            ##STR151##       1     1     S     164 (decomposes)                            ##STR152##       1     1                                                                                     ##STR153##                                                                          270 (decomposes)                            ##STR154##       1     1                                                                                     ##STR155##                                                                          155 (decomposes)                           C.sub.6 H.sub.5NH 1     1                                                                                     ##STR156##                                                                          163 (decomposes)                           ______________________________________                                    

EXAMPLE 6

Preparation of the starting compounds ##STR157##

At 65° C. and while stirring, a solution of 35 parts of KOH in 60 parts of methanol is dripped into 60 parts of compound III and 50 parts of methanol. The reaction mixture is then stirred for a further 2 hours at 65° C. The solvent is subsequently distilled off at 50 mbars and the residue is extracted several times with a total of 1,200 part of ether. After distilling off the ether, there is obtained 38 parts of compound VI (85% of theory; m.p. 94° C. from ligroin). ##STR158##

5 parts of compound VI, 7 parts of p-chlorobromoacetophenone and 3 parts of soda are stirred in 150 parts of ether for 24 hours at 34° C. After suction filtration of the organic salts, the solvent and the residue are digested with 50 parts of petroleum ether; 9.5 parts (91% of theory); m.p.: 111° C. (benzene/ligroin).

C. 17 parts of compound VI and 8.7 parts of methyl mustard oil are heated in 200 parts of benzene for 5 parts at 80° C. After the solvent has been distilled off, the residue is digested with 100 parts of petroleum ether; yield: 25 parts (97% of theory); m.p.: 116° C. (ethanol/ligroin). ##STR159##

At 80° C., 40.5 parts of azodicarboxylic acid diisopropyl ester is dripped into 20 parts of quadricyclane in 100 parts of benzene. The mixture is then heated for 24 hours at 80° C. and the solvent subsequently removed at 50 mbars; yield: 58 parts (98% of theory) of an oil.

The compounds in which R² and/or R³ denote H may also be present in the form of their salts, for instance as salts with mineral acids, e.g., as hydrochlorides.

The following compounds were prepared analogously:

    __________________________________________________________________________      ##STR160##                                                                    R.sup.2            R.sup.3 m.p. (°C.)                                   __________________________________________________________________________                         ##STR161##                                                                            163 (decomposes)                                    CH.sub.2COOCH.sub.3                                                                               COOCH.sub.3                                                                             76                                                 SO.sub.2C.sub.6 H.sub.5                                                                            "      130                                                  ##STR162##         "      128                                                  ##STR163##         "      141                                                  ##STR164##         "      164 (decomposes)                                     ##STR165##         "      128                                                  ##STR166##         "      b.p. 100/1 mbar                                      ##STR167##         "       73                                                  ##STR168##         "       75                                                  ##STR169##         "      oil                                                  ##STR170##         "      135                                                 C.sub.6 H.sub.5    C.sub.6 H.sub.5                                                                         98                                                 C.sub.6 H.sub.5CH.sub.2                                                                           C.sub.6 H.sub.5CH.sub.2                                                                oil                                                 __________________________________________________________________________

The compounds in Example 6 and the table were employed as starting compounds for active ingredients syntheses (cf. tables relating to Examples 2 and 4).

The new active ingredients have a strong biological action on plants, i.e. they influence plant growth, either by reducing the growth height, by changing the concentration of the plant constituents, or by destroying unwanted plants while not harming the crop plants.

Application may be effected for instance in the form of directly sprayable solutions, powder, suspensions, dispersions, emulsions, oil dispersions, pastes, dusts, broadcasting agents, or granules by spraying, atomizing, dusting, broadcasting or watering. The forms of application depend entirely on the purpose for which the agents are being used.

For the preparation of solutions, emulsions, pastes and oil dispersions to be sprayed direct, mineral oil fractions or medium to high boiling point, such as kerosene or diesel oil, further coal-tar oils, etc. and oils of vegetable or animal origin, aliphatic, cyclic and aromatic hydrocarbons such as benzene, toluene, xylene, paraffin, tetrahydronaphthalene, alkylated naphthalenes and their derivatives such as methanol, ethanol, propanol, butanol, chloroform, carbon tetrachloride, cyclohexanol, cyclohexanone, chlorobenzene, isophorone, etc., and strongly polar solvents such as dimethylformamide, dimethyl sulfoxide, N-methylpyrrolidone, water, etc. are suitable.

Aqueous formulations may be prepared from emulsion concentrates, pastes, oil dispersions or wettable powders by adding water. To prepare emulsions, pastes and oil dispersions the ingredients as such or dissolved in an oil or solvent may be homogenized in water by means of wetting or dispersing agents, adherents or emulsifiers. Concentrates which are suitable for dilution with water may be prepared from active ingredient, wetting agent, adherent, emulsifying or dispersing agent and possibly solvent or oil.

Examples of surfactants are: alkali metal, alkaline earth metal and ammonium salts of ligninsulfonic acid, naphthalenesulfonic acids, phenolsulfonic acids, alkylaryl sulfonates, alkyl sulfates, and alkyl sulfonates, alkali metal and alkaline earth metal salts of dibutylnaphthalenesulfonic acid, lauryl ether sulfate, fatty alcohol sulfates, alkali metal and alkaline earth metal salts of fatty acids, salts of sulfated hexadecanols, heptadecanols, and octadecanols, salts of sulfated fatty alcohol glycol ether, condensation products of sulfonated naphthalene and naphthalene derivatives with formaldehyde, condensation products of naphthalene or naphthalenesulfonic acids with phenol and formaldehyde, polyoxyethylene octylphenol ethers, ethoxylated isooctylphenol, ethoxylated octylphenol and ethoxylated nonylphenol, alkylphenol polyglycol ethers, tributylphenol polyglycol ethers, alkylaryl polyester alcohols, isotridecyl alcohols, fatty alcohol ethylene oxide condensates, ethoxylated castor oil, polyoxyethylene alkyl ethers, ethoxylated polyoxypropylene, lauryl alcohol polyglycol ether acetal, sorbitol esters, lignin, sulfite waste liquors and methyl cellulose.

Powders, dusts and broadcasting agents may be prepared by mixing or grinding the active ingredients with a solid carrier.

Granules, e.g., coated, impregnated or homogeneous granules, may be prepared by bonding the active ingredients to solid carriers. Examples of solid carriers are mineral earths such as silicic acid, silica gels, silicates, talc, kaolin, Attaclay, limestone, lime, chalk, bole, loess, clay, dolomite, diatomaceous earth, calcium sulfate, magnesium sulfate, magnesium oxide, ground plastics, fertilizers such as ammonium sulfate, ammonium phosphate, ammonium nitrate, and ureas, and vegetable products such as grain flours, bark meal, wood meal, and nutshell meal, cellulosic powders, etc.

The formulations contain from 0.1 to 95, and preferably 0.5 to 90, % by weight of active ingredient.

There may be added to the compositions or individual active ingredients oils of various types, herbicides, fungicides, nematocides, insecticides, bactericides, trace elements, fertilizers, antifoams (e.g., silicones), and growth regulators.

Examples of herbicidally active compounds with which the active ingredients according to the invention may be combined are as follows:

    __________________________________________________________________________      ##STR171##                                                                            R                R.sup.1                                               __________________________________________________________________________              ##STR172##      NH.sub.2                                                       ##STR173##      NHCH.sub.3                                                     ##STR174##      NHCH.sub.3                                                     ##STR175##      NH.sub.2                                                       ##STR176##      NH.sub.2                                              __________________________________________________________________________      ##STR177##                                                                    R                R.sup.1   R.sup.2                                             __________________________________________________________________________                       ##STR178##                                                                              H and salts                                         H                                                                                                ##STR179##                                                                              Cl and salts                                        H                                                                                                ##STR180##                                                                              F and salts                                         H                                                                                                ##STR181##                                                                              CH.sub.3 and salts                                  Cl.sub.2 OCH.sub.3                                                                               ##STR182##                                                                              H and salts                                         __________________________________________________________________________      ##STR183##                                                                     ##STR184##                                                                    R.sup.1          R.sup.2   R.sup.3                                             __________________________________________________________________________     CF.sub.3         nC.sub.3 H.sub.7                                                                         nC.sub.3 H.sub.7                                    CF.sub.3         nC.sub.3 H.sub.7                                                                         CH.sub.2CH.sub.2 Cl                                 SO.sub.2 NH.sub.2                                                                               nC.sub.3 H.sub.7                                                                         nC.sub.3 H.sub.7                                    __________________________________________________________________________      ##STR185##                                                                    R.sup.1           R.sup.2                                                                              R.sup.3                                                __________________________________________________________________________     CH.sub.3          H                                                                                     ##STR186##                                             ##STR187##       H     i-C.sub.3 H.sub.7                                       ##STR188##       H                                                                                     ##STR189##                                             ##STR190##       H                                                                                     ##STR191##                                             ##STR192##       H     i-C.sub.3 H.sub.7                                       ##STR193##       H     CH.sub.2C CCH.sub.2 Cl                                  ##STR194##       H                                                                                     ##STR195##                                             ##STR196##       H     CH.sub.3                                                ##STR197##       H     CH.sub.3                                               __________________________________________________________________________      ##STR198##                                                                     ##STR199##                                                                           R.sup.1       R.sup.2  R.sup.3                                          __________________________________________________________________________             ##STR200##   H        C.sub.2 H.sub.5                                          ##STR201##   CH.sub.3 CH.sub.3                                                 ##STR202##   H        CH.sub.3                                                 ##STR203##   H        C.sub.2 H.sub.5                                          ##STR204##   H        CH.sub.3                                                 ##STR205##   H        C.sub.2 H.sub.5                                  __________________________________________________________________________      ##STR206##                                                                    R.sup.1        R.sup.2   R.sup.3                                               __________________________________________________________________________     i-C.sub.3 H.sub.7                                                                             i-C.sub.3 H.sub.7                                                                        CH.sub.2CClCHCl                                       n-C.sub.3 H.sub.7                                                                             n-C.sub.3 H.sub.7                                                                        C.sub.2 H.sub.5                                        "              "        n-C.sub.3 H.sub.7                                     sec. C.sub.4 H.sub.9                                                                          sec. C.sub.4 H.sub.9                                                                     C.sub.2 H.sub.5                                       C.sub.2 H.sub. 5                                                                              C.sub.2 H.sub.5                                                                           ##STR207##                                            ##STR208##    C.sub.2 H.sub.5                                                                          C.sub.2 H.sub.5                                        ##STR209##    C.sub.2 H.sub.5                                                                          C.sub.2 H.sub.5                                       __________________________________________________________________________      ##STR210##                                                                     ##STR211##                                                                                    R                                                              __________________________________________________________________________                     C.sub.2 H.sub.5                                                                n-C.sub.3 H.sub.7                                                               ##STR212##                                                    __________________________________________________________________________      ##STR213##                                                                    R.sup.1       X       Y        R.sup.2                                         __________________________________________________________________________     CH.sub.3      Cl      Cl       Na                                              Cl            Cl      Cl       Na                                              C.sub.2 H.sub.5                                                                              Cl      Cl       Na                                               ##STR214##   Cl      H        CH.sub.3                                         ##STR215##   H       H        H and salts                                      ##STR216##   H       Cl       NH.sub.4                                         ##STR217##   H       CH.sub.3 C.sub.2 H.sub.5                                  ##STR218##   H       CH.sub.3 CH.sub.3                                              "       H       CH.sub.3 i-C.sub.3 H.sub.7                                ##STR219##   H       CH.sub.3                                                                                 ##STR220##                                      ##STR221##   H       CH.sub.3 CH.sub.3                                                       ##STR222##                                                                     ##STR223##                                                      __________________________________________________________________________      ##STR224##                                                                    R.sup.1        X        R.sup.2                                                __________________________________________________________________________     i-C.sub.3 H.sub.7                                                                             Cl       C.sub.2 H.sub.5                                         "             Cl                                                                                       ##STR225##                                             "             Cl       i-C.sub.3 H.sub.7                                      C.sub.2 H.sub.5                                                                               Cl       C.sub.2 H.sub.5                                         "             Cl       C(CH.sub.3).sub.2 CN                                    "             Cl                                                                                       ##STR226##                                             "             Cl                                                                                       ##STR227##                                             ##STR228##    Cl       (CH.sub.3).sub.2CH                                      "             Cl       tert. C.sub.4 H.sub.9                                  i-C.sub.3 H.sub.7                                                                             OCH.sub.3                                                                               i-C.sub.3 H.sub.7                                       "             SCH.sub.3                                                                               C.sub.2 H.sub.5                                        C.sub.2 H.sub.5                                                                               SCH.sub.3                                                                               C.sub.2 H.sub.5                                         "             SCH.sub.3                                                                               tert. C.sub.4 H.sub.9                                  __________________________________________________________________________      ##STR229##                                                                            X          Y         R                                                 __________________________________________________________________________             CF.sub.3   H         CH.sub.3                                                  H          F         CH.sub.3                                          __________________________________________________________________________      ##STR230##                                                                    R.sup.1         R.sup.2     R.sup.3                                            __________________________________________________________________________      ##STR231##                                                                                     ##STR232## CH.sub.2 Cl                                         ##STR233##                                                                                     ##STR234## CH.sub.2 Cl                                         ##STR235##     CH.sub.2CH.sub.2OCH.sub.3                                                                  CH.sub. 2 Cl                                        ##STR236##     CH.sub.2OCH.sub.3                                                                          CH.sub.2 Cl                                         "              CH.sub.2OCH.sub.3                                                                          CH.sub.2 Cl                                         "              CH.sub.2OC.sub.4 H.sub.9 n                                                                 CH.sub.2 Cl                                         ##STR237##                                                                                     ##STR238## CH.sub.2 Cl                                         ##STR239##     H            --                                                 ##STR240##     H                                                                                           ##STR241##                                         "              H           C.sub.2 H.sub.5                                     ##STR242##     H           C(CH.sub.3).sub.2C.sub.3 H.sub.7                    ##STR243##     H           CH.sub.3                                            ##STR244##     H           CH.sub.3                                            ##STR245##     H                                                                                           ##STR246##                                        __________________________________________________________________________      ##STR247##                                                                     ##STR248##                                                                    X              X.sup.1 R                                                       __________________________________________________________________________     Br             Br      H and salts                                             I              I       H and salts                                             Br             Br                                                                                      ##STR249##                                              ##STR250##            and salts                                               __________________________________________________________________________      ##STR251##                                                                    R             R.sup.1 R.sup.2                                                                               R.sup.3                                           __________________________________________________________________________     Cl            Cl      Cl     H                                                 F             Cl      Cl     H                                                 Cl            Cl      H      H                                                 Cl            CF.sub.3                                                                               H      COOH                                              Cl            Cl      H      COOCH.sub.3                                       NO.sub.2      CF.sub.3                                                                               H      H                                                 H             CF.sub.3                                                                               Cl     H                                                 H             CF.sub.3                                                                               Cl     OC.sub.2 H.sub.5                                  Cl            Cl      H      OCH.sub.3                                         __________________________________________________________________________      ##STR252##                                                                    R.sup.1           R.sup.2                                                                             R.sup.3                                                                              R.sup.4                                           __________________________________________________________________________      ##STR253##       H    CH.sub.3                                                                             CH.sub.3                                           ##STR254##       H    CH.sub.3                                                                             CH.sub.3                                           ##STR255##       H    CH.sub.3                                                                             CH.sub.3                                           ##STR256##       H    CH.sub.3                                                                             CH.sub.3                                           ##STR257##       H    CH.sub.3                                                                             CH.sub.3                                           ##STR258##       H    CH.sub.3                                                                              ##STR259##                                        ##STR260##       H    CH.sub.3                                                                             CH.sub.3                                           ##STR261##       H    CH.sub.3                                                                             OCH.sub.3                                          ##STR262##       H    CH.sub.3                                                                             CH.sub.3                                           ##STR263##       H    CH.sub.3                                                                             OCH.sub.3                                          ##STR264##       H    CH.sub.3                                                                             CH.sub.3                                           ##STR265##       H    CH.sub.3                                                                             CH.sub.3                                           ##STR266##       H    CH.sub.3                                                                             OCH.sub.3                                          ##STR267##       H    CH.sub.3                                                                             CH.sub.3                                           ##STR268##       H    CH.sub.3                                                                             OCH.sub.3                                          ##STR269##       H    CH.sub.3                                                                             OCH.sub.3                                          ##STR270##       H    CH.sub.3                                                                             CH.sub.3                                           ##STR271##       CH.sub.3                                                                            H     CH.sub.3                                           ##STR272##                                                                     ##STR273##                                                                     ##STR274##                                                                    __________________________________________________________________________      ##STR275##                                                                    R              R.sup.1          R.sup.2                                        __________________________________________________________________________     tert. C.sub.4 H.sub.9                                                                         NH.sub.2         SCH.sub.3                                        "                                                                                            ##STR276##      SCH.sub.3                                       ##STR277##    NH.sub.2         CH.sub.3                                       __________________________________________________________________________      ##STR278##                                                                           R.sup.1    R.sup.2  R.sup.3                                             __________________________________________________________________________            CH.sub.3   Br       sec. C.sub.4 H.sub.9                                       CH.sub.3   Cl       tert. C.sub.4 H.sub.9                                      CH.sub.3   Cl                                                                                       ##STR279##                                                CH.sub.2CH.sub.2CH.sub.2                                                                            ##STR280##                                         __________________________________________________________________________      ##STR281##                                                                              R.sup.1       R.sup.2                                                __________________________________________________________________________               CH.sub.3      CH.sub.3                                                         CH.sub.3                                                                                      ##STR282##                                            __________________________________________________________________________      ##STR283##                                                                     ##STR284##                                                                    R.sup.1        R.sup.2    R.sup.3                                              __________________________________________________________________________      ##STR285##    sec. C.sub.4 H.sub.9                                                                      H                                                     "             tert. C.sub.4 H.sub.9                                                                     H                                                     "               "        CH.sub.3                                             H              CH.sub.3   H salts and esters                                   H              sec. C.sub.4 H.sub.9                                                                      H salts and esters                                   H              tert. C.sub.4 H.sub.9                                                                     H salts and esters                                   H                "        CH.sub.3 salts and esters                            __________________________________________________________________________      ##STR286##                                                                                R.sup.1                                                            __________________________________________________________________________                  ##STR287##                                                                     ##STR288##                                                                     ##STR289##                                                        __________________________________________________________________________      ##STR290##                                                                     ##STR291##                                                                              R.sup.1       X                                                      __________________________________________________________________________               H             CH.sub.3 OSO.sub.3                                               Br              "                                                              CH.sub.3        "                                                              CH.sub.3      CF.sub.3 SO.sub.3                                       ##STR292##                                                                     ##STR293##                                                                     ##STR294##                                                                     ##STR295##                                                                     ##STR296##                                                                     ##STR297##                                                                     ##STR298##                                                                     ##STR299##                                                                     ##STR300##                                                                    __________________________________________________________________________      ##STR301##                                                                    R.sup.1      R.sup.2 R.sup.3  R.sup.4                                          __________________________________________________________________________     H            Cl      NH.sub.2 Cl                                               H            I       I        I                                                Cl           H       Cl       OCH.sub.3                                        Cl           Cl      H        Cl                                               Cl           Cl      Cl       OCH.sub.3                                        __________________________________________________________________________      ##STR302##                                                                    R.sup.1       R.sup.2                                                                               R.sup.3                                                   __________________________________________________________________________      ##STR303##   H      H     salts, esters, amides                                  "          CH.sub.3                                                                              H     salts, esters, amides                                ##STR304##   H      H     salts, esters, amides                                  "          CH.sub.3                                                                              H     salts, esters, amides                                ##STR305##   H      H     salts, esters, amides                                  "          CH.sub.3                                                                              H     salts, esters, amides                                ##STR306##                                                                     ##STR307##                                                                     ##STR308##                and salts, esters                                    ##STR309##                and salts, esters                                    ##STR310##                                                                     ##STR311##                and salts                                            ##STR312##                                                                     ##STR313##                                                                     ##STR314##                                                                     ##STR315##                salts and esters                                    __________________________________________________________________________      ##STR316##                                                                                      R.sup.1                                                      __________________________________________________________________________                       OH                                                                             CH.sub.3                                                      ##STR317##                salts and esters                                     ##STR318##                salts and esters                                     ##STR319##                and salts and esters                                 ##STR320##                and salts and esters                                 ##STR321##                                                                     ##STR322##                                                                     ##STR323##                                                                    __________________________________________________________________________      ##STR324##                                                                    R        R.sup.1                                                                               R.sup.2                                                                               R.sup.3                                                                               R.sup.4                                          __________________________________________________________________________     H        F.sub.3 C                                                                             H      C.sub.2 H.sub.5                                                                       C.sub.4 H.sub.9 n                                H        F.sub.3 C                                                                             H      nC.sub.3 H.sub.7                                                                       ##STR325##                                      H.sub.3 C                                                                               H.sub.3 C                                                                             H      H                                                                                      ##STR326##                                      H        F.sub.3 C                                                                             NH.sub.2                                                                              nC.sub.3 H.sub.7                                                                      nC.sub.3 H.sub.7                                  ##STR327##                                                                     ##STR328##                                                                     ##STR329##                                                                     ##STR330##                                                                     ##STR331##                                                                     ##STR332##                                                                     ##STR333##                                                                     ##STR334##                                                                     ##STR335##                                                                     ##STR336##                                                                     ##STR337##                                                                     ##STR338##                                                                    __________________________________________________________________________      ##STR339##                                                                    R                R.sup.1       R.sup.2                                         __________________________________________________________________________     CH.sub.3         CH.sub.3      CH(C.sub.6 H.sub.3).sub.2                        ##STR340##      H             C.sub.2 H.sub.5                                  ##STR341##      iC.sub.3 H.sub.7                                                                             CH.sub.2 Cl                                      ##STR342##      CH.sub.2OC.sub.2 H.sub.5                                                                     CH.sub.2 Cl                                      ##STR343##      CH.sub.2CH.sub.2OCH.sub.3                                                                    CH.sub.2 Cl                                     CH.sub.2CHCH.sub.2                                                                              CH.sub.2CHCH.sub.2                                                                           CH.sub.2 Cl                                     __________________________________________________________________________

In many instances it may be advantageous to combine or mix the compounds according to the invention with other growth-regulating active ingredients, e.g., compounds of various chemical structure which form ethylene (e.g., phosphonic acid derivatives and silanes, ethyl hydrazines), and onium compounds (e.g., trimethylammonium, hydrazonium and sulfonium salts, and derivatives of morpholinium, piperidinium and pyridazinium compounds). Also of interest are other growth-regulating substances, for instance from the group of trifluoromethylsulfonamido-p-acetotoluidides, maleic hydrazide, abscisic acid derivatives, chlorinated phenoxy fatty acids having an auxinic action, and polyhydric alcohols and fatty acid esters having a specific action on meristematic tissue areas.

The amount used of the agents according to the invention may vary, and depends in the main on the type of effect desired.

The application rate is generally from 0.1 to 15 and more, preferably from 0.2 to 6, kg of active ingredient per hectare.

The agents according to the invention influence the growth of plant parts above and in the soil in a different manner; employed in the usual concentrations, they have a low toxicity to warm bloods.

The new agents have an effect on the physiology of plant growth and may be used for various purposes. The different effects of these active ingredients depend in essence on the time of application, based on the development stage of the seed or plant, and on the concentrations employed.

The influence on vegetative development is manifested in particular in a reduction in growth height, giving numerous plants, especially cereals, increased rigor and reducing the tendency toward lodging. Simultaneously, tillering is improved, resulting in an increase in ear-bearing stems per unit area.

In grass, the reduced growth height gives a denser, more resistant sward, this is particular enabling the mowing frequency to be reduced. This is a considerable labor-saving advantage for lawns, grass verges and in parks. The reduction in growth height is also accompanied by an increase in the chlorophyll content, as a result of which grass and other plants take on a much deeper green.

The influence on vegetative growth also considerably increases flowering and fruiting in numerous plants, e.g., cotton and soybeans.

Of particular importance is the surprising phenomenon that treatment with the substances according to the invention induces rooting. This results in a more rational use of water and nutrients by the treated plants, thus increasing their resistance not only to dryness but also to cold (frost).

The possibilities of using the compounds of the invention in fruit and ornamentals, in landscaping (including appropriate influence of the vegetation on barren land), and airfields and training grounds are varied and extensive.

The substances may also be successfully used for hastening ripening and flowering, and in special methods of cultivation.

The new agents may also positively influence the concentration of important plant consistuents such as sugar and proteins.

The extent and degree of action depend on various factors, especially the time of application in relation to the development stage of the plant and the concentration employed. These factors are, in turn, different for different plant species and depend on the effect desired. For instance, lawns will be treated during the whole growth period; ornamentals in which it is desired to increase the bloom intensity and number of buds, before budding; and plants whose fruit is to be used or processed, an appropriate length of time before the harvest. Various derivatives of the class of compounds described here have herbicidal properties, and are therefore suitable for removing and controlling unwanted plants.

EXAMPLES 7-10 Action on Wheat, Barley and Oats

In the greenhouse, the four cereals wheat ("Opal" variety), rye ("Petkuser"), barley ("Villa") and oats ("Flamingskrone") were sown in plastic dishes 11.5 cm in diameter in a sandy loam adequately supplied with nutrients. The active ingredients were applied at various rates to the soil and to the leaves. When applied to the soil, the active ingredient were sprayed onto the surface of the soil on the day of sowing; in the case of leaf treatment, the leaves were sprayed in the usual manner at a growth height of the plants of 10 cm. During the 18 day growth period, the treated plants grew much more slowly than the untreated control, a fact later confirmed by measurements of the stem length. Measurements were taken of 100 plants from each series. As a result of the use of transparent plastic dishes it was surprisingly ascertained that root growth had been promoted in the treated series.

The prior art agent used for comparison purposes was N-2-chloroethyl-N,N,N-trimethylammonium chloride (CCC; German Printed Application DAS No. 1,294,734).

The results are given in the following tables.

                  EXAMPLE 7                                                        ______________________________________                                         Influence on the growth height of wheat (soil and leaf                         treatment)                                                                                  Application                                                                    rate     Plant height                                             Active Ingredient                                                                             kg/ha      in cm    relative                                    ______________________________________                                         (A) Soil treatment                                                             Control        --         31.0     100                                         CCC            0.5        26.0      83.9                                                      1.0        24.5      79.0                                                      2.0        22.5      72.6                                                      6.0        22.0      71.0                                        ##STR344##    0.5 1.0 2.0 6.0                                                                           28.5 23.0 20.5 10.5                                                                     91.9 74.2 66.1 33.9                          ##STR345##    0.5 1.0 2.0 6.0                                                                           27.5 22.5  15.5 11.5                                                                    88.7 72.6 50.0 31.7                         (B) Leaf treatment                                                             Control        --         30.0     100                                         CCC            0.125      28.0      93.3                                                      0.5        26.0      86.7                                                      1.0        26.0      86.7                                                      2.0        23.0      76.7                                                      4.0        23.0      76.7                                        ##STR346##    0.125 0.5 1.0 2.0 4.0                                                                     24.0 22.0 20.0 19.0 17.5                                                                80.0 73.3 66.6 63.3 58.3                     ##STR347##    0.125 0.5 1.0 2.0 4.0                                                                     25.0 23.5 21.0 21.5 20.0                                                                83.3 78.3 70.0 71.7  66.7                   ______________________________________                                    

                  EXAMPLE 8                                                        ______________________________________                                         Influence on the growth height of rye (soil and leaf treatment)                             Application                                                                    rate     Plant height                                             Active ingredient                                                                             kg/ha      in cm    relative                                    ______________________________________                                         (A) Soil treatment                                                             Control        --         29.0     100                                         CCC            0.5        28.0      96.6                                                      1.0        27.5      94.8                                                      2.0        28.0      96.6                                                      6.0        26.5      91.4                                        ##STR348##    0.5 1.0 2.0 6.0                                                                           22.5 19.0 13.0 8.5                                                                      77.6 65.5 44.8 29.3                          ##STR349##    0.5 1.0 2.0 6.0                                                                           23.0  22.5 19.0 9.0                                                                     79.3 77.6 65.5 31.0                         (B) Leaf treatment                                                             Control        --         29.5     100                                         CCC            0.125      29.0      98.3                                                      0.5        28.0      94.9                                                      1.0        27.5      93.2                                                      2.0        27.5      93.2                                                      4.0        29.0      98.3                                        ##STR350##    0.125 0.5 1.0 2.0 4.0                                                                     24.5 20.0 18.5 17.5 16.0                                                                83.1 67.8 62.7 59.3 54.2                     ##STR351##    0.125 0.5 1.0 2.0 4.0                                                                     25.0 20.5 22.0 18.0 18.5                                                                84.7 69.5  74.6 61.0 62.7                   ______________________________________                                    

                  EXAMPLE 9                                                        ______________________________________                                         Influence on the growth height of barley (soil and leaf                        treatment                                                                                   Application                                                                    rate     Plant height                                             Active ingredient                                                                             kg/ha      in cm    relative                                    ______________________________________                                         (A) Soil treatment                                                             Control        --         31.5     100                                         CCC            0.5        28.0      88.9                                                      1.0        27.0      85.7                                                      2.0        26.0      82.5                                                      6.0        25.0      79.4                                        ##STR352##    0.5 1.0 2.0 6.0                                                                           28.0 28.0 23.5 16.5                                                                     88.9 88.9 74.6 52.4                          ##STR353##    0.5 1.0 2.0 6.0                                                                           30.5  29.0 24.5 19.0                                                                    96.8 92.1 77.8 60.3                         (B) Leaf treatment                                                             Control        --         30.0     100                                         CCC            0.125      29.0      96.7                                                      0.5        28.5      95.0                                                      1.0        26.5      88.3                                                      2.0        27.0      90.0                                                      4.0        27.0      90.0                                        ##STR354##    0.125 0.5 1.0 2.0 4.0                                                                     24.0 23.0 21.5 20.5 18.5                                                                80.0 76.7 71.7 68.3 61.7                     ##STR355##    0.125 0.5 1.0 2.0 4.0                                                                     25.5 23.5 22.0 20.5 20.0                                                                85.0 78.3 73.3  68.3 66.7                   ______________________________________                                    

                  EXAMPLE 10                                                       ______________________________________                                         Influence on the growth height of oats (soil and leaf treatment)                            Application                                                                    rate     Plant height                                             Active ingredient                                                                             kg/ha      in cm    relative                                    ______________________________________                                         (A) Soil treatment                                                             Control        --         28.0     100                                         CCC            0.5        28.0     100                                                        1.0        28.0     100                                                        2.0        27.0      96.4                                                      6.0        26.0      92.9                                        ##STR356##    0.5 1.0 2.0 6.0                                                                           25.0 24.0 21.0 15.0                                                                     89.3 85.7 75.0 53.6                          ##STR357##    0.5 1.0 2.0 6.0                                                                           28.0 26.5  24.5 15.5                                                                    100 94.6 87.5 55.4                          (B) Leaf treatment                                                             Control        --         28.0     100                                         CCC            0.125      28.0     100                                                        0.5        28.5     101.8                                                      1.0        28.0     100                                                        2.0        27.0      96.4                                                      4.0        25.5      91.1                                        ##STR358##    0.125 0.5 1.0 2.0 4.0                                                                     23.5 22.5 21.0 19.0 17.0                                                                83.9 80.4 75.0 67.9 60.7                     ##STR359##    0.125 0.5 1.0 2.0 4.0                                                                     25.5 25.0 22.5 22.5 22.0                                                                91.1 89.3 80.4 80.4 78.6                    ______________________________________                                    

EXAMPLE 11 Influence on Stem Length of Cereals and Gramineae

The compounds listed in the following Tables A and B were examined by the method described below as to their effect on the crop plants listed in these tables:

The vessels used for the experiments were plastic pots having a volume of 1,130 cm³ (Table A) or paraffined paper cups having a volume of 170 cm³ (Table B). The pots and cups were filled with a sandy loam. The seeds of the test plants-separated by species-were sown shallow. Preemergence treatment (soil treatment) was effected immediately after sowing and before germination of the seeds. Seeds lying on the surface came into contact with the active ingredients. Postemergence treatment (leaf treatment) took place at an average growth height of the plants (depending on the rate of growth) of from 6 to 10 cm. The substances were suspended, emulsified or dissolved in water as diluent and applied by means of fine nozzles. The vessels were kept in the greenhouse in a temperature range of 12° C. to 25° C., and were regularly sprinkler irrigated for the duration of the experiment. The observation period was 6 to 8 weeks.

Results

Tables (A) and (B) contain compounds which exercise a strong influence on the development of the plant shoots. This growth inhibition of the parts of the plant above ground is desirable, and is not accompanied by disadvantageous symptoms such as chlorosis. The treated plants were usually conspicous for their dark green leaves.

                                      EXAMPLE 11, TABLE (A)                        __________________________________________________________________________     Influence on the growth height of young cereal plants                                                 Growth height in cm after                                                      soil treatment                                                                        leaf treatment                                                  Application rate                                                                       Triticum                                                                              Hordeum                                                                             Triticum                                    Active ingredient                                                                             kg/ha   aestivum                                                                              vulgare                                                                             aestivum                                    __________________________________________________________________________     Control        --      42     37   44                                           ##STR360##    0.5     40     36   40                                                         1.0     40     31   40                                          CCC (prior art)                                                                               2.0     33     33   40                                           ##STR361##    0.5 1.0 2.0                                                                            16 15 0                                                                               40 39 38                                                                            42 27 20                                     ##STR362##    0.5 1.0 2.0                                                                            25 25 20                                                                              40 38 53                                                                            40 34 35                                     ##STR363##    0.5 1.0 2.0                                                                            40 40 30                                                                              48 44 41                                                                            40 39 40                                     ##STR364##    0.25 0.5 1.0 2.0                                                                       26 15 -- --                                                                           -- 43 40 30                                                                         29 25 13  12                                 ##STR365##    0.5 1.0 2.0                                                                            22 12 10                                                                              40 42 31                                                                            35 33 33                                     ##STR366##    0.5 1.0 2.0                                                                            24 20 16                                                                              38 30 27                                                                            33 28 17                                     ##STR367##    0.5 1.0 2.0                                                                            26 26 13                                                                              36 36  29                                                                           28 28 17                                     ##STR368##    0.25 0.5 1.0 2.0                                                                       32 28 20 23                                                                           -- 36 39 31                                                                         30 23 26 20                                  ##STR369##    0.25 0.5 1.0 2.0                                                                       22 12 6 7                                                                             36 30 18 14                                                                         36 30 28 25                                 __________________________________________________________________________

                                      EXAMPLE 11, TABLE (B)                        __________________________________________________________________________     Influence on the growth height of Gramineae (soil and leaf treatment)                                 % growth inhibition compared with untreated                                    control after                                                                  soil treatment                                                                              leaf treatment                                            Application rate                                                                       Arena                                                                              Hordeum                                                                             Lolium                                                                             Avena                                                                              Hordeum                                                                             Lolium                            Active ingredient                                                                             kg/ha   sativa                                                                             vulgare                                                                             multifl.                                                                           sativa                                                                             vulgare                                                                             multifl.                          __________________________________________________________________________      ##STR370##    3.0     25  10    5  45  10   20                                 ##STR371##    3.0     30  30   30  50  50   30                                 ##STR372##    3.0     20   0    0  40  35   20                                 ##STR373##    3.0     30  40   30.sup.+                                                                           40  30   25                                 ##STR374##    3.0     60  35   --  20  20    0                                 ##STR375##    3.0     60  60   50  60  50   50                                 ##STR376##    3.0     40  60.sup.+                                                                            50  50  50   50                                __________________________________________________________________________      0 = no inhibition                                                              100 = no growth                                                                .sup.+ = leaf necroses due to too high phytotoxicity                     

EXAMPLE 12 Action on Stem Length, Number of Lateral Shoots and Yield in Spring Barley

To examine the effect of the various substances on spring barley up to the maturity stage of the plants, an experiment was carried out in large pots. The plants were grown in quartz sand (fertilized with 2 g N as ammonium nitrate in 3 doses, 1 g P₂ O₅ as secondary sodium phosphate, 1.5 g K₂ O as potassium sulfate, 0.5 g MgO as magnesium sulfate, 10 ml of a solution of trace elements, and 10 mg of iron as an iron complex). The active ingredients were applied to the leaves twice, once at a rate of 0.5 kg/ha and once at a rate of 1.5 kg/ha, at a plant height of 35 to 40 cm. The treated plants were up to 10% shorter than the control, and yields were also slightly up. The results of this experiment are given below.

EXAMPLE 13 Action on Grass or Lawns

Lawn seed of the standard mixture Agrostis tenius (10%), Cynosurus cristatus (10%), Festuca rubra (15%), Lolium perenne (35%) and Poa praetensis (30%) was sown in a loam in large pots. The soil was fertilized with 1.5 g N as ammonium nitrate and 1 g P₂ O₅ as secondary potassium phosphate. After the grass had been cut twice, it was sprayed in conventional manner at a height of 4 cm with the active ingredients at various application rates. 19 days after treatment the growth height and dry substance content were determined. The treated grass was much shorter than the control, and produced a correspondingly lower amount of dry substance.

It was also observed that as the amount of compound according to the invention increased the color of the grass turned an intensive deep green. The results of this experiment are given below. The prior art compound used for comparison purposes was maleic hydrazide (M; German 815,192).

                                      EXAMPLE 12                                   __________________________________________________________________________     Influence on stem length, number of lateral shoots and yield in spring         barley                                                                                        Stem length                                                                            No. of lateral shoots                                                                    Ear weight                                    Active ingredient                                                                             cm relative                                                                            no. relative                                                                             g  relative                                   __________________________________________________________________________     Control        76.9                                                                              100   93 100   90.4                                                                              100                                        CCC      3kg/ha                                                                               74.2                                                                               96.5                                                                                99 106.5 95.0                                                                              105.1                                       ##STR377##                                                                             0.5 kg/ha 1.5 kg/ha                                                                  74.1 69.7                                                                         96.4 90.6                                                                           105 111                                                                            112.9 119.4                                                                          91.5 94.8                                                                         101.2 104.9                                __________________________________________________________________________

                                      EXAMPLE 13                                   __________________________________________________________________________     Action of grass or lawns                                                                              19 days after                                                    Application                                                                          First cutting,                                                                         treatment            First cutting, chlorophyll                  rate  growth height                                                                          dry substance                                                                          Observations content                            Active ingredient                                                                       kg/ha cm relative                                                                            g  relative                                                                            (color)      g Ca + b/100 g                     __________________________________________________________________________                                                 TS                                 Control  --    25.5                                                                              100  12.5                                                                              100  normal green 1.33                               M        0.25  25.0                                                                               98.0                                                                               10.5                                                                               84.0                                                                               normal green --                                          0.5   24.5                                                                               96.0                                                                               10.5                                                                               84.0                                                                               "            --                                          1.0   20.0                                                                               78.4                                                                                7.3                                                                               58.4                                                                               "            --                                          2.0   16.0                                                                              62.7  6.0                                                                               48.0                                                                               lighter green                                                                         reddish                                                                              1.11                                                                      brown 1n                                                                            --                                 4.0      12.5  49.0                                                                               4.5 36.0                                                                              "    places -                                         ##STR378##                                                                             0.25 0.5 1.0 2.0 4.0                                                                 26.0 24.0 19.0 16.0 10.5                                                          101.9 94.1 74.5 62.7 41.1                                                           10.7 8.6 7.0 4.8 3.1                                                              85.6 68.8 56.0 38.4 24.8                                                            normal green " " dark green "                                                               -- -- -- -- --                      ##STR379##                                                                             0.25 0.5 1.0 2.0 4.0                                                                 25.0 24.0 21.5 18.0 12.5                                                          98.0 94.1 84.2 70.5 49.0                                                            12.8 11.4 8.4 6.3 4.1                                                             102.4 91.2 67.2 50.4 32.8                                                           normal green -- -- -- 1.40 --"                  __________________________________________________________________________

EXAMPLE 14 Long-Term Action on Lawns

A further experiment was carried out on lawns under the same conditions as in Example 13. To investigate the long-term action of the compounds of the invention, the growth of the grass was observed for 3 cuttings after treatment, and in the period of renewed growth after each cutting the shortening effect and the corresponding decrease in dry substance were ascertained. The good long-term action of the agents examined is apparent from the following table. The prior art compound used for comparison purposes was the diethanolamine salt of 3-trifluoromethylsulfonamido-p-acetotoluidide (S; Proc. Northeast. Weed Sci. Soc., 29, 403-408, 1975).

                                      EXAMPLE 14                                   __________________________________________________________________________     Long-term action on lawns                                                                 Application                                                                          First cutting   Second cutting  Third cutting                 Active     rate  growth height                                                                          green weight                                                                           growth height                                                                          green weight                                                                           green weight                  ingredient kg/ha cm relative                                                                            g  relative                                                                            cm relative                                                                            g  relative                                                                            g  relative                   __________________________________________________________________________     Control    --    18.0                                                                              100  35.3                                                                              100  14.7                                                                              100  26.7                                                                              100  15.2                                                                              100                        S          0.5   14.5                                                                               80.6                                                                               26.7                                                                               75.6                                                                               14.0                                                                               95.2                                                                               27.3                                                                              102.2                                                                               15.6                                                                              102.6                                 1.0   13.0                                                                               72.2                                                                               23.0                                                                               65.2                                                                               12.5                                                                               85.0                                                                               27.6                                                                              103.4                                                                               15.0                                                                               98.6                                 2.0   10.5                                                                               58.3                                                                               12.6                                                                               35.7                                                                                9.5                                                                               64.6                                                                               20.1                                                                               75.3                                                                               13.7                                                                               90.1                                 4.0    9.0                                                                               50.0                                                                                9.4                                                                               26.6                                                                                4.5                                                                               30.6                                                                                9.6                                                                               36.0                                                                               10.4                                                                               68.4                       ##STR380##                                                                               0.5 1.0 2.0 4.0                                                                      14.5 12.5 11.0 10.5                                                                80.6 69.5 61.1 58.3                                                                25.5 24.4 22.0 16.5                                                                72.2 69.1 62.3 46.7                                                                14.5 11.5  8.0  7.0                                                                98.6 78.2 54.4 47.6                                                                27.8 25.1 18.7 13.2                                                               104.1  94.0 70.0 49.4                                                               16.5 16.5 14.0 10.3                                                               108.6 108.6  92.1                                                              67.8                        ##STR381##                                                                               0.5 1.0 2.0 4.0                                                                      16.5 13.5 11.5  9.0                                                                91.7 75.0 63.9 50.0                                                                28.8 21.3 17.2 13.9                                                                81.6 60.3 48.7 39.4                                                                12.5  9.0 7.5  5.0                                                                 85.0 61.2 51.0 34.0                                                                27.2 20.5 16.2 10.2                                                               101.9  76.8 60.7 38.2                                                               17.2 15.1 12.5  9.8                                                               113.2  99.3 82.2                                                               64.5                        ##STR382##                                                                               0.5 1.0 2.0 4.0                                                                      18.5 16.5 14.5 12.5                                                               102.8  91.7 80.6 69.5                                                               31.8 27.1 20.3 19.5                                                                90.1 76.8 57.5 55.2                                                                14.0 13.0  9.0  7.0                                                                95.2 88.4 61.2 47.6                                                                28.8 25.8 19.1 16.8                                                               107.9  96.6 71.5 62.9                                                               15.5 15.3 12.8 12.8                                                               102.0 100.7  84.2                                                              84.2                        ##STR383##                                                                               0.5 1.0 2.0 4.0                                                                      15.0 12.5  7.5  6.5                                                                83.3 69.5 41.7 36.1                                                                23.1 20.5  9.8  7.9                                                                65.4 58.1 27.8 22.4                                                                10.0  9.0 5.0 2.0                                                                  68.0 61.2 34.0 13.6                                                                21.8 21.4 10.1  7.1                                                                81.6 80.1 37.8 26.6                                                                14.6 13.5  9.5  7.9                                                                96.1 88.8 62.5 52.0        ##STR384##                                                                               0.5 1.0 2.0 4.0                                                                      14.0 14.0 12.5  9.5                                                                77.8  77.8 69.5 52.8                                                               26.8 25.5 20.0 13.2                                                                75.9 72.2 56.7 37.4                                                                13.0 12.5 22.0  7.5                                                                88.4 85.0 74.8 51.0                                                                23.5 22.0 21.4 15.3                                                                88.0 82.4 80.1 57.3                                                                16.5 16.3 15.7 13.9                                                               108.6 107.2 103.3                                                              91.4                       __________________________________________________________________________

EXAMPLE 15 Action on Individual Grasses

Under the same conditions as in Example 13 the two grasses Festuca rubra and Poa praetensis (both components of the lawn mixture used in Example 13) were grown in a neutral sandy loam. The growth height was measured 3 weeks after treatment with the active ingredients. The results given below demonstrate the shortening effect of the compounds of the invention; Poa praetensis is influenced more strongly than Festuca rubra.

                  EXAMPLE 15                                                       ______________________________________                                         Influence on the growth height of the grasses                                  Festuca rubra and Poa praetensis                                                                 Festuca rubra                                                                             Poa praetensis                                              Application                                                                            growth height                                                                             growth height                                                 rate             rel-        rel-                                  Active ingredient                                                                          kg/ha     cm     ative cm    ative                                 ______________________________________                                         Control     --        27.5   100   22.5  100                                   M           0.5       28.0   101.8 23.0  102.2                                             1.0       28.5   103.6 22.0   97.8                                             2.0       26.5    96.4 22.0   97.8                                  ##STR385## 0.5 1.0 2.0                                                                              27.0 25.5 23.5                                                                         98.2 92.7 85.5                                                                      20.0 20.0.sup.+ 15.5.sup.+                                                            88.9 88.9 68.9                        ##STR386## 0.5 1.0 2.0                                                                              29.5 27.5 25.5                                                                        107.3 100.0  92.7                                                                    19.0 17.5.sup.+ 14.0.sup.+                                                            84.4 77.8 62.2                       ______________________________________                                          .sup.+ plants a darker green                                             

EXAMPLE 16 Action of Soybeans (Hydroponic Treatment)

Young soybean plants grown in quartz sand were transferred to hydroponic treatment in 4 liter vessels and provided with a sufficient supply of nutrient solution and trace elements. The active ingredients were added (0.25 mg/vessel=0.06 ppm; 1.0 mg/vessel=0.25 ppm; 2.5 mg/vessel=0.63 ppm) at a plant height of approx. 22 cm. The plants were in continuous contact with the active ingredients. During the growth period of 4 weeks the growth height of the treated plants was considerably reduced, compared with the control. The roots were also shorter, but the plants had more and stronger shoots. The results are given below.

                                      EXAMPLE 16                                   __________________________________________________________________________     Influence on the growth of roots and shoots of soybeans (hydroponic            treatment)                                                                              Application                                                                          Shoot    Root                                                            rate  length                                                                               dry substance                                                                         length                                                                               dry substance                                Active ingredient                                                                       ppm   cm rel.                                                                              g  rel.                                                                               cm rel.                                                                              g rel.                                       __________________________________________________________________________     Control  --    74.3                                                                              100                                                                               41.1                                                                              100 30.3                                                                              100                                                                               13.3                                                                             100                                         ##STR387##                                                                             0.06 0.25 0.63                                                                       70.7 62.3 51.7                                                                    95.4 84.1 69.8                                                                    39.0 31.5 26.6                                                                    94.9 76.6 64.7                                                                     28.3 24.7 24.7                                                                    93.4 81.5 81.5                                                                    13.5 13.2 15.0                                                                   97.1 95.0 107.9                            __________________________________________________________________________

EXAMPLE 71 a-c Action on Soybeans, Field Beans and Sunflowers

The action on soybeans, field beans and sunflowers was examined under the same conditions as in Example 16. The shoots and roots of all 3 crop plants were considerably shortened. Whereas in the shoots the dry substance was reduced commensurately with the shortening, the dry substance in the roots rose (particularly in soybeans) as the concentration increased. The results are given below.

                                      EXAMPLE 17a                                  __________________________________________________________________________     Action on soybeans (hydroponic treatment)                                               Application                                                                          Shoot        Root                                                        rate  length                                                                               dry substance                                                                         length                                                                               dry substance                                Active ingredient                                                                       ppm   cm rel.                                                                              g  rel.                                                                               cm rel.                                                                              g  rel.                                      __________________________________________________________________________     Control  --    36.7                                                                              100                                                                               5.8                                                                               100 28.7                                                                              100                                                                               1.1                                                                               100                                        ##STR388##                                                                             0.06 0.25 0.63                                                                       33.0 21.7 19.0                                                                    89.9 59.1 51.8                                                                    5.4 4.9 3.9                                                                       93.1 84.5 67.2                                                                     21.7 20.0 20.0                                                                    75.6 69.7 69.7                                                                    1.5 1.5 2.1                                                                       136.4 136.4 190.9                         __________________________________________________________________________

                                      EXAMPLE 17b                                  __________________________________________________________________________     Action of field beans (hydroponic treatment)                                            Application                                                                          Shoot        Root                                                        rate  length                                                                               dry substance                                                                         length                                                                               dry substance                                Active ingredient                                                                       ppm   cm rel.                                                                              g  rel.                                                                               cm rel.                                                                              g  rel.                                      __________________________________________________________________________     Control  --    73.0                                                                              100                                                                               16.9                                                                              100 41.3                                                                              100                                                                               6.2                                                                               100                                        ##STR389##                                                                             0.06 0.25 0.63                                                                       69.7 67.3 56.7                                                                    95.5 92.2 77.7                                                                    14.5 14.5 13.0                                                                    85.8 85.8 76.9                                                                     28.3 28.3 25.0                                                                    68.5 68.5 60.5                                                                    3.8 5.3 6.0                                                                       63.3 85.5 96.8                            __________________________________________________________________________

                                      EXAMPLE 17 c                                 __________________________________________________________________________     Action on sunflowers (hydroponic treatment)                                             Application                                                                          Shoot         Root                                                       rate  length                                                                               dry substance                                                                          length                                                                               dry substance                               Active ingredient                                                                       ppm   cm rel.                                                                              g  rel. cm rel.                                                                              g  rel.                                     __________________________________________________________________________     Control  --    41.3                                                                              100                                                                               6.4                                                                               100  20.0                                                                              100                                                                               1.5                                                                               100                                       ##STR390##                                                                             0.06 0.25 0.63                                                                       35.0 27.3 27.3                                                                    84.7 66.1 66.1                                                                    6.3 5.3 5.2                                                                       98.4 82.8 81.3                                                                      18.7 16.7 12.7                                                                    93.5 83.5 63.5                                                                    1.5 1.4 1.6                                                                       100 93.3 106.7                           __________________________________________________________________________

EXAMPLE 18 Action on Cotton

Cotton plants were subjected to hydroponic treatment under the same conditions as in Example 16. The active ingredients were added (1.25 mg/vessel=0.3 ppm and 5 mg/vessel=1.25 ppm) at a height of the plant of 15 to 18 cm. During the 4 week growth period it was not only observed that the treated plants were considerably shortened, but also that the buds of the control plants and those treated with CCC withered in the nascent stage and dropped off, whereas the other treated plants developed a surprisingly large number of distinct squares. The results below are averages from 3 vessels, each of 3 plants.

                  EXAMPLE 18                                                       ______________________________________                                         Induction of flowering and influence on the growth height                      of cotton (hydroponic treatment)                                                                                     No. of                                                                         squares                                                Application             per                                                    rate      Shoot   length                                                                               vessel                                   Active ingredient                                                                            ppm       cm      rel.  (3 plants)                               ______________________________________                                         Control        --       47.2    100   0                                        CCC           0.3       36.2    76.7  0                                                      1.25      34.8    73.8  0                                         ##STR391##   0.3 1.25  40.2 27.8                                                                              85.2 58.9                                                                            4.0 8.7                                   ##STR392##   0.3 1.25  41.9 30.9                                                                              88.8 65.5                                                                            2.6 8.3                                  ______________________________________                                    

EXAMPLE 19 Action on Soybeans in a Vegetation Experiment in Sandy Soil

Soybean plants of the Gieso variety were grown in a neutral sandy loam. Fertilization took place at the time of sowing, with 0.5 g N as ammonium nitrate and 1.0 g P₂ O₅ as secondary potassium phosphate. The active ingredients were applied to the soil at rates of 3 and 6 kg/ha at a growth height of the plants of 10 to 12 cm.

After 4 weeks, the treated plants were much shorter than the control, and looked more compact as a result of the different angle of the leaves. The results are given below. The prior art compound used for comparison purposes was 2,3,5-triiodobenzoic acid (T; U.S. Pat. No. 2,978,838).

                  EXAMPLE 19                                                       ______________________________________                                         Action on soybeans in a vegetation experiment in a sandy loam                               Application rate                                                                          Growth height                                          Active ingredient                                                                             kg/ha        cm      relative                                   ______________________________________                                         Control        --           23.0    100                                        T              0.125        23.5    102.2                                                     0.375        25.0    108.7                                                     0.750        23.0    100.0                                       ##STR393##    3.0 6.0      15.0 14.0                                                                              65.2 60.9                                   ##STR394##    3.0 6.0      17.5 14.5                                                                              76.1 63.0                                   ##STR395##    3.0 6.0      13.5 12.5                                                                              58.7 54.4                                   ##STR396##    3.0 6.0      17.5 13.5                                                                              76.1 58.7                                   ##STR397##    3.0 6.0      14.0 14.0                                                                              60.9 60.9                                   ##STR398##     3.0 6.0     21.0 17.0                                                                              91.3 73.9                                   ##STR399##    3.0 6.0      17.0 16.0                                                                              73.9 69.6                                  ______________________________________                                    

EXAMPLE 20 Action on Sugar Beet

Sugar beets of the KAWpoly variety were grown in a neutral sandy loam in large pots. Fertilization with 1.5 g N as ammonium nitrate and 1 g P₂ O₅ as secondary potassium phosphate took place at the time of sowing. At a plant height of 16 to 18 cm the leaves were treated twice, once with 0.5 kg/ha and once with 1 kg/ha; in each case, 4 pots formed a variation of the experiment. After harvesting, the yield and sugar content in the beets and the lower stems were found to have been improved by the treatment. The results are given in the following table.

                                      EXAMPLE 20                                   __________________________________________________________________________     Influence on yield and sugar content of sugar beet                                                                 Sugar content of                                       Application                                                                          Yield     Sugar content                                                                          lower stems                                            rate  g dry sub-                                                                               % in dry                                                                               % in dry                                   Active ingredient                                                                          kg/ha stance/vessel                                                                         rel.                                                                              substance                                                                           rel.                                                                              substance                                                                             rel.                                __________________________________________________________________________     Content     --    12.4   100                                                                               50.3 100                                                                               22.7   100                                  ##STR400## 0.5 1.0                                                                              13.04 14.39                                                                           107.4 118.5                                                                       51.0 52.2                                                                           101.4 103.8                                                                       22.9 25.8                                                                             100.9 113.6                         __________________________________________________________________________

EXAMPLE 21 Influence on the Sugar Content of Sugar Beet in the Open

The active ingredient was applied to small plots in an ordinary beet field to demonstrate the positive influence on sugar production under field conditions. The crop plant was Beta vulgaris sap. altissima, variety "Kleinwanzleben KAWPoly". The soil was a sandy loam (1.5% organic substance, pH 5.7). Mineral fertilization totalled 400 kg N, 100 kg P₂ O₅, and 100 kg K₂ O per hectare. For chemical weed control, 2.5 kg/ha of 1-phenyl-4-amino-5-chloropyridazone-(6) was applied before emergence of the beet plants. Aphids were controlled with dimethoate (O,O-dimethyl-S-(N-methylcarbonylmethyl)-phosphorus dithioate). Sowing took place on Mar. 10, 1975. The beets were lifted comparatively early on Sept. 29, 1975. The active ingredient was applied with the aid of spraying equipment with fine nozzles, mounted on a tractor. The amount of water used for dispersion purposes was 780 liters/ha. Treatment was effected on 2 different dates and on different plots:

I--the beet had 5 to 7 true leaves;

II--five weeks before harvesting, on the well developed plants. The sugar content was determined from fresh beets immediately after lifting.

The following results may be recorded:

(1) There was no impairment of the beets during the growth period.

(2) The sugar yields overall were low as a result of the early lifting. However, the sugar content was significantly improved by the active ingredient (cf. table).

The results with sugar beet are an indication of the increased production of desirable plant constituents as a consequence of treatment with a representative of the class of compounds described.

                                      EXAMPLE 21                                   __________________________________________________________________________     Increase in the sugar content of sugar beet by chemical treatment in the       open                                                                                      Application                                                                    rate  Date                                                                               Sugar content in freshly lifted beet                      Active ingredient                                                                         kg/ha treated                                                                            absolute %                                                                            relative increase                                  __________________________________________________________________________     Control    --    --  12.6 a.sup.++                                                                         100                                                 ##STR401##                                                                               2.0 2.0                                                                              I.sup.+ II                                                                         14.35 b 13.85 ab                                                                      113 110                                            __________________________________________________________________________      .sup.+ I = 20.05.75 Harvest: 29.09.75                                          II = 21.08.75                                                                  .sup.++ Values which have letters in common are not significantly              different (Duncan's new multiple range test, level 0.05%).               

EXAMPLE 22 Action on Tomatoes

Tomatoes were grown in the greenhouse in glass dishes 11.5 cm in diameter containing a peat substrate which was provided with an adequate supply of nutrients. The active ingredients were sprayed onto the leaves in conventional manner at a plant height of 9 to 12 cm. After 14 days the treated plants were shorter than the control, and had a deeper color.

    ______________________________________                                                     Application rate                                                                          Plant height                                            Active ingredient                                                                            kg/ha        cm      relative                                    ______________________________________                                         Control       --           27.2    100                                          ##STR402##   1.5 3.0 6.0  24.3 20.3 14.0                                                                         89.3 74.6 51.5                               ##STR403##   1.5 3.0 6.0  25.0 22.7 15.3                                                                         91.9 83.5 56.2                              ______________________________________                                    

EXAMPLE 23 Action on Rice

Rice was grown in the greenhouse under the same conditions as in Example 22. At a growth height of 11 to 13 cm the active ingredients were sprayed onto the leaves in the usual manner. The plants were measured after 66 days. The treated plants were up to 30% shorter than the control.

    ______________________________________                                                     Application rate                                                                          Plant height                                            Active ingredient                                                                            kg/ha        cm      relative                                    ______________________________________                                         Control       --           40.6    100                                         CCC           1.0          38.0    93.6                                                      2.0          40.5    99.8                                                      4.0          38.5    94.8                                                      6.0          40.0    98.5                                         ##STR404##   1.0 2.0 4.0 6.0                                                                             35.0 33.0 29.5 28.5                                                                    86.2 81.3 72.7 70.2                          ##STR405##   1.0 2.0 4.0 6.0                                                                             37.0 37.0 34.5 33.5                                                                    91.1 91.1 85.0 82.5                         ______________________________________                                    

EXAMPLE 24 Action on Sunflowers

Sunflowers were grown under the same conditions as in Example 22. The active ingredients were applied both to the soil and to the leaves. Both methods of treatment resulted in much shorter plants than the control.

    ______________________________________                                                     Application rate                                                                          Plant height                                            Active ingredient                                                                            kg/ha        cm      relative                                    ______________________________________                                         (A) Soil treatment                                                             Control       --           36.3    100                                         CCC           3.0          40.0    110                                                       12.0         36.0    99                                           ##STR406##    3.0 12.0    26.5 15.5                                                                              73 43                                        ##STR407##    3.0 12.0    30.5 22.5                                                                              84 62                                       (B) Leaf treatment                                                             Control       --           38.3    100                                         CCC           1.5          38.0    99                                                        6.0          32.5    85 -                                                                            1.5 6.0830.0 25.5 78 67                     ##STR409##   1.5 6.0      33.0 30.0                                                                              86 78                                       ______________________________________                                    

EXAMPLE 25 Herbicidal Action

The new compounds listed in Tables 1 to 3 below have proved to be effective in the control of unwanted plants. The following test method was employed.

Paraffined paper cups having a volume of 170 cm³ were filled with a sandy loam, and the seeds of the test plants sown therein, separated by species. (The species are also listed below.)

In the first group, treatment was effected immediately after sowing and before germination of the seeds (preemergence treatment=soil treatment). Shallow sown seeds not completely covered with soil came into contact with the active ingredients. In the second group, the plants were treated postemergence (=leaf treatment) at a growth height of from 2 to 8 cm, depending on the rate of growth and shape of the species concerned. The compounds were suspended or emulsified in water and applied with the aid of fine nozzles. The amounts applied are given in Tables 1 to 3. The soil and plants were thoroughly sprinkler irrigated for the duration of the experiment. The cups were placed in the greenhouse and kept in the temperature range 12°-25° C. or 18°-35° C., depending on the temperature requirements of the various species. After 2 to 6 weeks the action was assessed visually on a 0 to 100 scale, 0 denoting no damage and 100 denoting plants not germinated or completely destroyed.

List of plants employed in Tables 1 to 3:

    ______________________________________                                         Latin name         English name                                                ______________________________________                                         Alopecurus myosuroides                                                                            Blackgrass                                                  Cynodon dactylon   Bermudagrass                                                Cyperus esculentus Yellos nutsedge                                             Datura stramonium  Jimson weed                                                 Digitaria sanguinalis                                                                             Hairy crabgrass                                             Echinochloa crus-galli                                                                            Barnyardgrass                                               Euphorbia spp.     Spurge family                                               usually E. geniculata                                                          Eleusine indica    Goosegrass                                                  Galium aparine     Catchweed bedstraw                                          Ipomoea spp.       Morningglory                                                usually I. lacunosa                                                            Natricaria chamomilla                                                                             Wild chamomile                                              Panicum virgatum   Switchgrass                                                 Poa annua          Annual bluegrass                                            Setaria faberii    Giant foxtail                                               Sinapis alba       White mustard                                               Solanum nigrum     Black nightshade                                            Sorghum halepense  Johnsongrass                                                Stellaria media    Chickweed                                                   ______________________________________                                    

Results (Tables 1, 2, 3):

(1) The herbicidal action of the new compounds in combatting and controlling unwanted plant growth was confirmed. This action was observed on monocotyledonous and dicotyledonous species, and with pre- and postemergence application. Representatives of widely varying botanical families were investigated.

(2) Herbaceous crop plants were not very resistant to the compounds given in Tables 1 to 3 (soil and leaf treatment). However, the compounds are suitable for removing and suppressing unwanted plants when a technique is employed in crop plants in which the active ingredients do not come into direct contact with the young leaves of the crop plants (postdirected spray, lay-by treatment, granulation of the active ingredients). It is also possible to apply the compounds to perennial species after cutting or during dormancy. A further field is weed control in woody crop plants such as berry bushes and tress of all kinds. Unwanted plants can also be removed or suppressed in loci where no account need be taken of crop plants.

                                      TABLE 1                                      __________________________________________________________________________     Herbicidal action - preemergence application                                                   Application                                                                          Test plants and percentage damage                        Active          rate  Alopecurus                                                                           Cynodon                                                                             Cyperus                                                                              Digitaria                                                                            Euphorbia                                                                            Ipomoes                     ingredient      kg/ha myosuroides                                                                          dactylon                                                                            esculentus                                                                           sanguinalis                                                                          spp.  spp.                        __________________________________________________________________________      ##STR410##     2.0 4.0                                                                              -- 85 70 90                                                                               27 55 100 --                                                                               -- -- 50 60                        ##STR411##     2.0 4.0                                                                              70 83 65 90                                                                               45 60  70 100                                                                               90 100                                                                              -- 29                        ##STR412##     2.0 4.0                                                                              55 70  80 100                                                                             55 55 -- -- -- --  0 10                        ##STR413##     2.0 4.0                                                                              40 40  83 100                                                                              0  0 100 100                                                                               90 100                                                                              78 75                        ##STR414##     2.0 4.0                                                                              80 80  90 100                                                                              0  0   68  90                                                                             65 90 78 --                       __________________________________________________________________________                     Application                                                                          Test plants and percentage damage                        Active          rate  Matricaria                                                                           Panicum                                                                             Poa Setaria                                                                             Sinapis                                                                            Sorghum                                                                             Stellaria                   ingredient      kg/ha chamomilla                                                                           virgatum                                                                            annua                                                                              faberii                                                                             alba                                                                               halepense                                                                           media                       __________________________________________________________________________      ##STR415##     2.0 4.0                                                                              95 -- 100 --                                                                              95 --                                                                               97 100                                                                              99 100                                                                             75 100                                                                             100 --                       ##STR416##     2.0 4.0                                                                              95 -- 100 --                                                                              57 --                                                                              59 65                                                                                74 74 78                                                                               100 --                       ##STR417##     2.0 4.0                                                                              -- -- -- --                                                                               -- --                                                                              80 90                                                                               80 95                                                                              90 90                                                                               -- --                        ##STR418##     2.0 4.0                                                                              -- -- -- --                                                                               65 --                                                                               55 100                                                                             98 --                                                                              55 55                                                                               13 --                        ##STR419##     2.0 4.0                                                                              -- -- -- --                                                                               70 --                                                                               40 100                                                                             90 --                                                                              53 50                                                                               -- --                       __________________________________________________________________________       0 = no damage                                                                 100 = complete destruction                                               

                                      TABLE 2                                      __________________________________________________________________________     Herbicidal action of a new compound and comparative agents -                   pre- and postemergence application                                                            Application Test plants and percentage damage                                  rate  Application                                                                          Alopecurus                                                                           Echinochloa                                                                          Galium                                                                             Sinapis                             Active ingredient                                                                             kg/ha method                                                                               myosuroides                                                                          crus galli                                                                           aparine                                                                            alba                                __________________________________________________________________________      ##STR420##    1.0 2.0                                                                              PRE PRE                                                                               0  0  80   90                                                                             -- --                                                                               90  90                                            1.0   POST  70    100   --  100                                 prior art (Belgian 668,018)                                                                   2.0   POST  70    100   --  100                                                4.0   POST  --    --    50  --                                   ##STR421##    1.0 2.0                                                                              PRE PRE                                                                                0  0                                                                                80  90                                                                              -- --                                                                               60  60                                            1.0   POST   80   100   --  100                                 prior art (Farm Chemical                                                                      2.0   POST   30   100   --  100                                 Handbook 1975, Meister                                                                        4.0   POST  --    --     0  --                                  Publishing Co, USA, p. D50                                                      ##STR422##    1.0 2.0                                                                              PRE PRE                                                                               20  78                                                                              100 100                                                                              -- --                                                                               0  0                                              1.0   POST   40    98   --   0                                                 2.0   POST   50    98   --   0                                  prior art (Chem. Week,                                                                        4.0   POST  --    --     0  --                                  26.7.1972, p. 21)                                                              __________________________________________________________________________

                                      TABLE 3                                      __________________________________________________________________________     Herbicidal action of new compounds and comparative agents                      pre- and postemergence application                                             __________________________________________________________________________                        Application Test plants and percentage damage                                  rate  Application                                                                          Alopecurus                                                                            Datura                                                                               Digitaria                                                                            Eleusine                     Active ingredient  kg/ha method                                                                               myosuroides                                                                           stramonium                                                                           sanguinalis                                                                          indica                       __________________________________________________________________________      ##STR423##        2.0 4.0 8.0                                                                          PRE PRE PRE                                                                          95 95 98                                                                              -- -- --                                                                             -- -- --                                                                             -- -- --                                        2.0   POST  25     30    80    50                           prior art          4.0   POST  25     40    80    50                           (German 833,274)   8.0   POST  30     60    90    50                            ##STR424##        2.0 4.0  8.0                                                                         PRE PRE PRE                                                                          30 25 25                                                                              -- -- --                                                                             -- -- --                                                                             -- -- --                     prior art          2.0   POST  15     95    50    40                           (German Printed Application                                                                       4.0   POST  22     95    70    50                           DAS 1,142,251)     8.0   POST  38     100   90    50                            ##STR425##        2.0 4.0 8.0                                                                          PRE PRE PRE                                                                          68 85 98                                                                              -- -- --                                                                             -- -- --                                                                             -- -- --                                        2.0   POST  28     10    --    --                           prior art          4.0   POST  38     20    --    --                           (U.S. Pat. No. 2,864,683)                                                                         8.0   POST  35     60    --    --                           __________________________________________________________________________                        Application Test plants and percentage damage                                  rate  Application                                                                          Galium Lamium                                                                               Poa   Solanum                      Active ingredient  kg/ha method                                                                               aparine                                                                               spp.  annua nigrum                       __________________________________________________________________________      ##STR426##        2.0 4.0 8.0                                                                          PRE PRE PRE                                                                          88 80 88                                                                              72 90 95                                                                             100 100 100                                                                          85 85 90                                        2.0   POST  0      50    30    22                           prior art          4.0   POST  0      50    30    22                           (German 833,274)   8.0   POST  10     90    42    38                            ##STR427##        2.0 4.0 8.0                                                                          PRE PRE PRE                                                                          60 80 75                                                                              50 65 75                                                                             50 58 65                                                                             75 80 90                     prior art          2.0   POST  0      75    30    100                          (German Printed Application                                                                       4.0   POST  0      85    30    100                          DAS 1,142,251)     8.0   POST  0      85    30    100                           ##STR428##        2.0 4.0 8.0                                                                          PRE PRE PRE                                                                          70 80 90                                                                              25 60 85                                                                             95 98 100                                                                            0 15 25                                         2.0   POST  5      0     35    10                           prior art          4.0   POST  5      10    35    10                           (U.S. Pat. No. 2,864,683)                                                                         8.0   POST  5      20    40    20                           __________________________________________________________________________                        Application Test plants and percentage damage                                  rate  Application                                                                          Alopecurus                                                                            Datura                                                                               Digitaria                                                                            Eleusine                     Active ingredient  kg/ha method                                                                               myosuroides                                                                           stramonium                                                                           sanguinalis                                                                          indica                       __________________________________________________________________________      ##STR429##        2.0 4.0 8.0                                                                          PRE PRE PRE                                                                          70 75 90                                                                              -- -- -- -- --                                                                             -- -- --                                        2.0   POST  15     60    60    90                                              4.0   POST  38     95    70    90                                              8.0   POST  45     100   80    90                            ##STR430##        2.0 4.0 8.0                                                                          PRE PRE PRE                                                                          70 88 100                                                                             -- -- --                                                                             -- -- --                                                                             -- -- --                                        2.0   POST  32     50    60    60                                              4.0   POST  40     60    60    60                                              8.0   POST  50     65    80    70                           __________________________________________________________________________                        Application Test plants and percentage damage                                  rate  Application                                                                          Galium Lamium                                                                               Poa   Solanum                      Active ingredient  kg/ha method                                                                               aparine                                                                               spp.  annua nigrum                       __________________________________________________________________________      ##STR431##        2.0 4.0 8.0                                                                          PRE PRE PRE                                                                          80 100 100                                                                            95 95 95                                                                             100 100 100                                                                          95 95 95                                        2.0   POST  10     60    35    85                                              4.0   POST  15     90    40    100                                             8.0   POST  20     90    50    100                           ##STR432##        2.0 4.0 8.0                                                                          PRE PRE PRE                                                                          72 98 90                                                                              95 95 95                                                                             80 92 95                                                                             95 95 95                                        2.0   POST  10     55    38    90                                              4.0   POST  18     60    52    95                                              8.0   POST  30     95    68    100                          __________________________________________________________________________      0 = no damage                                                                  100 = complete destruction                                                     PRE = preemergence application                                                 POST = postemergence application                                         

EXAMPLE 26

90 parts by weight of compound 1 is mixed with 10 parts by weight of N-methyl-β-pyrrolidone. A mixture is obtained which is suitable for application in the form of very fine drops.

EXAMPLE 27

20 parts by weight of compound 2 is dissolved in a mixture consisting of 80 parts by weight of xylene, 10 parts by weight of the adduct of 8 to 10 moles of ethylene oxide to 1 mole of oleic acid-N-monoethanolamide, 5 parts by weight of the calcium salt of dodecylbenzenesulfonic acid, and 5 parts by weight of the adduct of 40 moles of ethylene oxide to 1 mole of castor oil. By pouring the solution into 100,000 parts by weight of water and uniformly distributing it therein, an aqueous dispersion is obtained containing 0.02% by weight of the active ingredient.

EXAMPLE 28

20 parts by weight of compound 1 is dissolved in a mixture consisting of 40 parts by weight of cyclohexanone, 30 parts by weight of isobutanol, 20 parts by weight of the adduct of 7 moles of ethylene oxide to 1 mole of isooctylphenol, and 10 parts by weight of the adduct of 40 moles of ethylene oxide to 1 mole of castor oil. By pouring the solution into 100,000 parts by weight of water and uniformly distributing it therein, an aqueous dispersion is obtained containing 0.02% by weight of the active ingredient.

EXAMPLE 29

20 parts by weight of compound 1 is dissolved in a mixture consisting of 25 parts by weight of cyclohexanol, 65 parts by weight of a mineral oil fraction having a boiling point between 210° and 280° C., and 10 parts by weight of the adduct of 40 moles of ethylene oxide to 1 mole of castor oil. By pouring the solution into 100,000 parts by weight of water and uniformly distributing it therein, an aqueous dispersion is obtained containing 0.025 by weight of the active ingredient.

EXAMPLE 30

20 parts by weight of compound 1 is well mixed with 3 parts by weight of the sodium salt of diisobutylnaphthalene-α-sulfonic acid, 17 parts by weight of the sodium salt of a ligninsulfonic acid obtained from a sulfite waste liquor, and 60 parts by weight of powdered silica gel, and triturated in a hammer mill. By uniformly distributing the mixture in 20,000 parts by weight of water, a spray liquid is obtained containing 0.1% by weight of the active ingredient.

EXAMPLE 31

3 parts by weight of compound 2 is intimately mixed with 97 parts by weight of particulate kaolin. A dust is obtained containing 3% by weight of the active ingredient.

EXAMPLE 32

30 parts by weight of compound 2 is intimately mixed with a mixture consisting of 92 parts by weight of powdered silica gel and 8 parts by weight of paraffin oil which has been sprayed onto the surface of this silica gel. A formulation of the active ingredient is obtained having good adherence.

EXAMPLE 33

40 parts by weight of compound 1 is intimately mixed with 10 parts of the sodium salt of a phenolsulfonic acid-urea-formaldehyde condensate, 2 parts of silica gel and 48 parts of water to give a stable aqueous dispersion. Dilution in 100,000 parts by weight of water gives an aqueous dispersion containing 0.04 wt.% of active ingredient.

EXAMPLE 34

20 parts of compound 1 is intimately mixed with 2 parts of the calcium salt of dodecylbenzenesulfonic acid, 8 parts of a fatty alcohol polyglycol ether, 2 parts of the sodium salt of a phenosulfonic acid-urea-formaldehyde condensate and 68 parts of a paraffinic mineral oil. A stable oily dispersion is obtained.

EXAMPLE 35

Further experiments were carried out in the greenhouse under the condition described in Example 11. The plastic pots had a volume of 300 cm³. As the plants which were examined liked the warmth (Eupghorbia geniculate, Arachis hypogaea, Cynodon dactylon), they were kept at from 20°-30° C. Cynodon dactylon from seed was cut once and the young growth treated postemergence.

Results

Postemergence treatment with the compounds of the invention listed in Table 1 below resulted in a considerable (and desirable from the crop point of view) reduction in shoot growth in groundnuts (Arachis hypogaea) and Bermudagrass (Cynodon dactylon). The same effect can be achieved with a preemergence application, as shown for instance in Table 2 at Euphorbia geniculata. It is particularly noteworthy that the comparative agents only act on certain plant species. By contrast, the compounds according to the invention act on a larger number of plant species. Similar effects were obtained with the new compounds in soybeans (Glycine max.), Indian corn (Zea mays) and other species.

                                      TABLE 1                                      __________________________________________________________________________     Growth-regulating action in groundnuts (A. hypogaea) and Burmudagrass          (C. dactylon) - postemergence application in greenhouse                                          Application                                                                               Test plants and growth height                                       rate  Arachis                                                                             hypogaea                                                                            Cynodon                                                                             dactylon                                Active ingredient kg/ha cm   relative                                                                            cm   relative                                __________________________________________________________________________     Untreated control --    16   100  11   100                                      ##STR433##       2.0 1.0 0.5                                                                           9 12 13                                                                            56 75 81                                                                            4 4 4                                                                               36 36 36                                 ##STR434##       2.0 1.0 0.5 0.25                                                                     5 7.5 8 8                                                                           31 47 50 50                                                                          3 4 4 --                                                                           27 36 36 --                              ##STR435##       2.0 1.0 0.5                                                                          10 14 14                                                                            62 87 87                                                                            6 6 7                                                                               54 54 64                                 ##STR436##       2.0 1.0 0.5                                                                          -- -- --                                                                            -- -- --                                                                            6 7 8                                                                               54 64 73                                 ##STR437##       2.0 1.0 0.5 0.25                                                                     7 7 8 9                                                                             44 44 50 56                                                                           9 12 12 --                                                                         82 109 109 --                          prior art                                                                      [ClCH.sub.2CH.sub.2N(CH.sub.3.sup.⊕).sub.3 ]Cl.sup.⊖                                 2.0   14    87  9    82                                                        0.5   16   100  9    82                                      prior art                                                                      __________________________________________________________________________

                                      TABLE 2                                      __________________________________________________________________________     Growth-regulating action in Euphorbia geniculata - preemergence                treatment                                                                      in greenhouse                                                                                   Application                                                                          Test plants and growth height                                            rate  Euphorbia geniculata                                    Active ingredient                                                                               kg/ha cm      relative                                        __________________________________________________________________________     Untreated control                                                                               --    11      100                                              ##STR438##      1.0 0.5 0.25                                                                         3 5 6   27 45 54                                        [ClCH.sub.2CH.sub.2N(CH.sub.3.sup.⊕).sub.3 ]Cl.sup.⊖                                1.0   9       82                                              prior art        0.5   10      91                                                               0.25  10      91                                               ##STR439##      1.0 0.5 0.25                                                                         10 12 12                                                                               91 109 109                                      prior art                                                                      __________________________________________________________________________ 

We claim:
 1. A polycyclic nitrogen-containing compound of the formula ##STR440## where B denotes the radicals --SO₂ --, ##STR441## --S--, C denotes the radicals --N═N-- or ##STR442## n is 0, m denotes one of the integers 0 and 1, and R¹ denotes hydrogen, alkyl of 1 to 30 carbon atoms, alkenyl of 1 to 30 carbon atoms, or alkynyl of 1 to 30 carbon atoms--all of which may be linear or branched, cyclic or acylic, phenyl, naphthyl, or benzyl, the above-mentioned radicals, apart from hydrogen, being unsubstituted or mono or polysubstituted by halogen (F, Cl, Br, I) or pseudo-halogen (CN, SCN), --OH, --SH, NO₂, --NO, ═N--OH, ═N--OAlk(Ar), ═S, ═NH, ═NAlk(Ar), ═O, ##STR443## --COOH or --SO₃ H, Alk(Ar)--O--, Alk(Ar)--S--, ##STR444## (Alk, Ar)₂ --N--SO₂ --, Alk(Ar)--N═N--, primary, secondary or tertiary alkyl, haloalkyl, haloalkoxy, haloalkylmercapto, or the radical ##STR445## Alk denoting alkyl and Ar denoting an unsubstituted phenyl or phenyl substituted by halogen or trifluoromethyl, and R² and R³ are identical or different and each denotes (B)_(m) --R⁴, R⁴ having the same meanings as R¹, and salts of these compounds. 